diff --git a/subprojects/gnome-pwa-list/README.md b/subprojects/gnome-pwa-list/README.md
new file mode 100644
index 0000000..0cc89b5
--- /dev/null
+++ b/subprojects/gnome-pwa-list/README.md
@@ -0,0 +1,61 @@
+# GNOME PWA list
+
+This repository is a place to maintain a list of Progressive Web Apps that are
+suitable for inclusion with GNOME Software. The goals of this initiative are:
+
+1. To facilitate the discovery of useful apps by pre-populating a list of web
+   apps in GNOME Software
+2. To enable users to take advantage of the powerful features of PWAs, such as
+   offline functionality and desktop integration
+3. To make the GNOME platform competitive with other platforms which already
+   make PWAs first-class citizens
+
+There is more context available in the discussion on [this issue](https://gitlab.gnome.org/GNOME/gnome-software/-/issues/1575).
+
+## Criteria for inclusion
+
+To be eligible for inclusion, PWAs must:
+
+- either be released under an open source license (see below) or appear in the
+  popular apps category [here](https://www.findpwa.com/list/top-apps) or [here](https://appsco.pe/toplist)
+- be served over HTTPS
+- include a [web app manifest](https://developer.mozilla.org/en-US/docs/Web/Manifest) with an
+  icon, name, and a `display` value of `fullscreen`, `standalone`, or
+  `minimal-ui`. The app having an Install button in Chrome means the app meets
+  and exceeds these criteria.
+- be fully functional in GNOME Web
+- not duplicate a native (non-Electron) app available for GNOME
+
+## Process for adding to the list
+
+1. Determine that the app meets all the criteria above.
+2. Gather the information for each of the columns listed below.
+2. If the license is [FSF-approved or OSI-approved](https://spdx.org/licenses/),
+   the app will go in `gnome-pwa-list-foss.csv`, otherwise `gnome-pwa-list-proprietary.csv`.
+4. Add a new line in the format "URL,license,categories,content-rating,adaptive,custom-summary" to
+   either CSV file as appropriate.
+5. Re-build the AppStream xml; see below.
+6. Open a merge request [here](https://gitlab.gnome.org/mwleeds/gnome-pwa-list/-/merge_requests).
+
+| Column  | Example value | Accepted values |
+|---------|---------------|-----------------|
+| URL     | https://app.diagrams.net/ | the starting URL of the app |
+| license | Apache-2.0 | the license(s) of the client side software in a format conforming to the AppStream [spec](https://www.freedesktop.org/software/appstream/docs/chap-Metadata.html#tag-project_license) |
+| categories | Graphics;Office | one or more main or additional categories as defined [here](https://specifications.freedesktop.org/menu-spec/latest/apa.html) |
+| content-rating | social-info=intense;social-audio=moderate | a set of key-value pairs which are OARS 1.1 attributes and values; see [here](https://hughsie.github.io/oars/generate.html). "social-info=none" is appropriate if the service does not even store IP addresses |
+| adaptive | adaptive | either "adaptive" or "not-adaptive" depending on whether mobile devices are supported |
+| custom-summary | "Telegram web app based on the open API" | a one-sentence summary to use instead of the one in the manifest, or an empty string |
+
+## Re-generating AppStream xml
+
+The script `pwa-metainfo-generator.py` can take the CSV files mentioned above
+and generate AppStream metainfo for them, which enables software centers to
+display them with rich metadata such as screenshots.
+
+1. Install the `requests` and `bs4` python3 modules using pip3 or your package manager
+2. To regenerate the FOSS xml: `python3 pwa-metainfo-generator.py gnome-pwa-list-foss.csv`
+3. To regenerate the proprietary xml: `python3 pwa-metainfo-generator.py gnome-pwa-list-proprietary.csv`
+4. You can check the validity using e.g. `appstreamcli validate
+   gnome-pwa-list-foss.xml`. It will complain about missing descriptions but
+   GNOME Software handles those gracefully.
+
diff --git a/subprojects/gnome-pwa-list/gnome-pwa-list-foss.csv b/subprojects/gnome-pwa-list/gnome-pwa-list-foss.csv
new file mode 100644
index 0000000..7450502
--- /dev/null
+++ b/subprojects/gnome-pwa-list/gnome-pwa-list-foss.csv
@@ -0,0 +1,11 @@
+https://app.diagrams.net/,Apache-2.0,Graphics;Office;FlowChart,social-info=mild,adaptive,
+https://pinafore.social/,AGPL-3.0-only,Chat,social-audio=intense;social-info=none,adaptive,
+https://snapdrop.net/,GPL-3.0-only,FileTransfer;Utility,social-info=mild,adaptive,"Local network file sharing in your browser"
+https://stackedit.io/app,Apache-2.0,TextEditor;Utility,social-info=mild,adaptive,
+https://squoosh.app/,Apache-2.0,FileTools;Utility;ImageProcessing,social-info=moderate,adaptive,
+https://excalidraw.com/,MIT,Office;Education,social-info=moderate,adaptive,
+https://discourse.gnome.org/,GPL-2.0-or-later,Chat,social-info=moderate;social-audio=moderate;social-contacts=intense,adaptive,
+https://discourse.flathub.org/,GPL-2.0-or-later,Chat,social-info=moderate;social-audio=moderate;social-contacts=intense,adaptive,
+https://devdocs.io/,MPL-2.0,Documentation;Development,social-info=moderate,adaptive,
+https://web.telegram.org/,GPL-3.0-only,Chat,social-info=mild,adaptive,"Telegram web app based on the MTProto protocol and Telegram's open API"
+https://flirtu.al/,AGPL-3.0-only,Network;Chat,sex-themes=moderate;social-chat=moderate;social-info=moderate;social-contacts=intense;money-purchasing=intense,adaptive,
diff --git a/subprojects/gnome-pwa-list/gnome-pwa-list-foss.xml b/subprojects/gnome-pwa-list/gnome-pwa-list-foss.xml
new file mode 100644
index 0000000..f2adbac
--- /dev/null
+++ b/subprojects/gnome-pwa-list/gnome-pwa-list-foss.xml
@@ -0,0 +1,338 @@
+<?xml version='1.0' encoding='utf-8'?>
+<components version="0.15">
+  <component type="web-application">
+    <launchable type="url">https://app.diagrams.net/</launchable>
+    <url type="homepage">https://app.diagrams.net/</url>
+    <project_license>Apache-2.0</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Diagrams</name>
+    <id>org.gnome.Software.WebApp_527a2dd6729c3574227c145bbc447997f0048537.desktop</id>
+    <icon type="remote" width="512" height="512">https://app.diagrams.net/images/android-chrome-512x512.png</icon>
+    <categories>
+      <category>Graphics</category>
+      <category>Office</category>
+      <category>FlowChart</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">mild</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>diagrams.net is a completely free diagram editor</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://pinafore.social/</launchable>
+    <url type="homepage">https://pinafore.social/</url>
+    <project_license>AGPL-3.0-only</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Pinafore</name>
+    <id>org.gnome.Software.WebApp_e636aa5f2069f6e9c02deccc7b65f43da7985e32.desktop</id>
+    <icon type="remote" width="48" height="48">https://pinafore.social/icon-48.png</icon>
+    <icon type="remote" width="72" height="72">https://pinafore.social/icon-72.png</icon>
+    <icon type="remote" width="96" height="96">https://pinafore.social/icon-96.png</icon>
+    <icon type="remote" width="144" height="144">https://pinafore.social/icon-144.png</icon>
+    <icon type="remote" width="192" height="192">https://pinafore.social/icon-192.png</icon>
+    <icon type="remote" width="512" height="512">https://pinafore.social/icon-512.png</icon>
+    <icon type="remote" width="44" height="44">https://pinafore.social/icon-44.png</icon>
+    <icon type="remote" width="50" height="50">https://pinafore.social/icon-50.png</icon>
+    <icon type="remote" width="150" height="150">https://pinafore.social/icon-150.png</icon>
+    <screenshots>
+      <screenshot type="default">
+        <image width="540" height="720">https://pinafore.social/screenshot-540-720-1.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="540" height="720">https://pinafore.social/screenshot-540-720-2.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="540" height="720">https://pinafore.social/screenshot-540-720-3.png</image>
+      </screenshot>
+    </screenshots>
+    <categories>
+      <category>Chat</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-audio">intense</content_attribute>
+      <content_attribute id="social-info">none</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>An alternative web client for Mastodon, focused on speed and simplicity</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://snapdrop.net/</launchable>
+    <url type="homepage">https://snapdrop.net/</url>
+    <project_license>GPL-3.0-only</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Snapdrop</name>
+    <id>org.gnome.Software.WebApp_4dda9043da5b2d2aa57c6064c907c1ae3fe58941.desktop</id>
+    <icon type="remote" width="192" height="192">https://snapdrop.net/images/android-chrome-192x192.png</icon>
+    <icon type="remote" width="512" height="512">https://snapdrop.net/images/android-chrome-512x512.png</icon>
+    <icon type="remote" width="96" height="96">https://snapdrop.net/images/favicon-96x96.png</icon>
+    <categories>
+      <category>FileTransfer</category>
+      <category>Utility</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">mild</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>Local network file sharing in your browser</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://stackedit.io/app</launchable>
+    <url type="homepage">https://stackedit.io/app</url>
+    <project_license>Apache-2.0</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>StackEdit</name>
+    <id>org.gnome.Software.WebApp_e7aada0261449b5239c5c458c48fe92717950d1a.desktop</id>
+    <icon type="remote" width="512" height="512">https://stackedit.io/icon_512x512.bc1452c3b77b59eb0d8c449de1c77310.png</icon>
+    <icon type="remote" width="384" height="384">https://stackedit.io/icon_384x384.3f55b77300c8b37b4aa380c8460ee0a2.png</icon>
+    <icon type="remote" width="256" height="256">https://stackedit.io/icon_256x256.f406288343ae34c5c7bd1543700c2ac0.png</icon>
+    <icon type="remote" width="192" height="192">https://stackedit.io/icon_192x192.eec0feaecc5bef1a499b3de11bde6b27.png</icon>
+    <icon type="remote" width="128" height="128">https://stackedit.io/icon_128x128.43ad56ce3535a3ffe333a76a05c13267.png</icon>
+    <icon type="remote" width="96" height="96">https://stackedit.io/icon_96x96.1d93fc90dc62ceec6c921786ddab3f69.png</icon>
+    <categories>
+      <category>TextEditor</category>
+      <category>Utility</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">mild</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>Full-featured, open-source Markdown editor</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://squoosh.app/</launchable>
+    <url type="homepage">https://squoosh.app/</url>
+    <project_license>Apache-2.0</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Squoosh</name>
+    <id>org.gnome.Software.WebApp_e41134be0ce95da0832878faa90cf3473b1b52d7.desktop</id>
+    <icon type="remote" width="1024" height="1024">https://squoosh.app/c/icon-large-cb438cac.png</icon>
+    <screenshots>
+      <screenshot type="default">
+        <image width="540" height="720">https://squoosh.app/c/screenshot1-0ff68546.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="540" height="720">https://squoosh.app/c/screenshot2-1f78c4db.jpg</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="540" height="720">https://squoosh.app/c/screenshot3-c1e02216.jpg</image>
+      </screenshot>
+    </screenshots>
+    <categories>
+      <category>FileTools</category>
+      <category>Utility</category>
+      <category>ImageProcessing</category>
+      <category>Photography</category>
+      <category>Office</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">moderate</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>Compress and compare images with different codecs, right in your browser</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://excalidraw.com/</launchable>
+    <url type="homepage">https://excalidraw.com/</url>
+    <project_license>MIT</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Excalidraw</name>
+    <id>org.gnome.Software.WebApp_ea52ad18346faac27072cd1654243dfb7c70ef14.desktop</id>
+    <icon type="remote" width="180" height="180">https://excalidraw.com/logo-180x180.png</icon>
+    <icon type="remote" width="256" height="256">https://excalidraw.com/apple-touch-icon.png</icon>
+    <screenshots>
+      <screenshot type="default">
+        <image width="462" height="945">https://excalidraw.com/screenshots/virtual-whiteboard.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="462" height="945">https://excalidraw.com/screenshots/wireframe.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="462" height="945">https://excalidraw.com/screenshots/illustration.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="462" height="945">https://excalidraw.com/screenshots/shapes.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="462" height="945">https://excalidraw.com/screenshots/collaboration.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="462" height="945">https://excalidraw.com/screenshots/export.png</image>
+      </screenshot>
+    </screenshots>
+    <categories>
+      <category>Office</category>
+      <category>Education</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">moderate</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>Excalidraw is a whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://discourse.gnome.org/</launchable>
+    <url type="homepage">https://discourse.gnome.org/</url>
+    <project_license>GPL-2.0-or-later</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>GNOME</name>
+    <id>org.gnome.Software.WebApp_dd7b0c5ff0c21c2984f8fc1a05d01c33aee4fe9d.desktop</id>
+    <icon type="remote" width="512" height="512">https://discourse-gnome-org-uploads.s3.dualstack.us-east-2.amazonaws.com/optimized/1X/d7f8fbabd4cd13f5fdbf7c73bd203723a2ef36ea_2_512x512.png</icon>
+    <categories>
+      <category>Chat</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">moderate</content_attribute>
+      <content_attribute id="social-audio">moderate</content_attribute>
+      <content_attribute id="social-contacts">intense</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>GNOME Project and Community related discussions</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://discourse.flathub.org/</launchable>
+    <url type="homepage">https://discourse.flathub.org/</url>
+    <project_license>GPL-2.0-or-later</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Flathub</name>
+    <id>org.gnome.Software.WebApp_02310f2fd700a63d17ecc2d4b261f6956d8a0193.desktop</id>
+    <icon type="remote" width="512" height="512">https://discourse-flathub-org-uploads.s3.dualstack.us-east-1.amazonaws.com/optimized/1X/be4563846333bda6607c6c3c5b226dff9d213866_2_512x512.png</icon>
+    <categories>
+      <category>Chat</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">moderate</content_attribute>
+      <content_attribute id="social-audio">moderate</content_attribute>
+      <content_attribute id="social-contacts">intense</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>A place for Flathub Contributors and Users</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://devdocs.io/</launchable>
+    <url type="homepage">https://devdocs.io/</url>
+    <project_license>MPL-2.0</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>DevDocs</name>
+    <id>org.gnome.Software.WebApp_962f69328d6450369f25a6fdb6bbd1764d11a3c8.desktop</id>
+    <icon type="remote" width="32" height="32">https://devdocs.io/images/webapp-icon-32.png</icon>
+    <icon type="remote" width="60" height="60">https://devdocs.io/images/webapp-icon-60.png</icon>
+    <icon type="remote" width="80" height="80">https://devdocs.io/images/webapp-icon-80.png</icon>
+    <icon type="remote" width="128" height="128">https://devdocs.io/images/webapp-icon-128.png</icon>
+    <icon type="remote" width="192" height="192">https://devdocs.io/images/webapp-icon-192.png</icon>
+    <icon type="remote" width="256" height="256">https://devdocs.io/images/webapp-icon-256.png</icon>
+    <icon type="remote" width="512" height="512">https://devdocs.io/images/webapp-icon-512.png</icon>
+    <categories>
+      <category>Documentation</category>
+      <category>Development</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">moderate</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>API Documentation Browser</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://web.telegram.org/</launchable>
+    <url type="homepage">https://web.telegram.org/</url>
+    <project_license>GPL-3.0-only</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Telegram</name>
+    <id>org.gnome.Software.WebApp_78977f7aec98d1c072a768b6a366b8d99cde8df4.desktop</id>
+    <icon type="remote" width="16" height="16">https://web.telegram.org/img/icons/icon16.png</icon>
+    <icon type="remote" width="32" height="32">https://web.telegram.org/img/icons/icon32.png</icon>
+    <icon type="remote" width="60" height="60">https://web.telegram.org/img/icons/icon60.png</icon>
+    <icon type="remote" width="64" height="64">https://web.telegram.org/img/icons/icon64.png</icon>
+    <icon type="remote" width="90" height="90">https://web.telegram.org/img/icons/icon90.png</icon>
+    <icon type="remote" width="128" height="128">https://web.telegram.org/img/icons/icon128.png</icon>
+    <icon type="remote" width="192" height="192">https://web.telegram.org/img/icons/icon192.png</icon>
+    <icon type="remote" width="512" height="512">https://web.telegram.org/img/icons/icon512.png</icon>
+    <icon type="remote" width="513" height="513">https://web.telegram.org/img/icons/icon.svg</icon>
+    <categories>
+      <category>Chat</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">mild</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>Telegram web app based on the MTProto protocol and Telegram's open API</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://flirtu.al/</launchable>
+    <url type="homepage">https://flirtu.al/</url>
+    <project_license>AGPL-3.0-only</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Flirtual</name>
+    <id>org.gnome.Software.WebApp_a7ddf5252b5092befefece3bcf5f9e8fa6568825.desktop</id>
+    <icon type="remote" width="192" height="192">https://flirtu.al/android-chrome-192x192.png?v=2</icon>
+    <icon type="remote" width="512" height="512">https://flirtu.al/android-chrome-512x512.png?v=2</icon>
+    <categories>
+      <category>Network</category>
+      <category>Chat</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="sex-themes">moderate</content_attribute>
+      <content_attribute id="social-chat">moderate</content_attribute>
+      <content_attribute id="social-info">moderate</content_attribute>
+      <content_attribute id="social-contacts">intense</content_attribute>
+      <content_attribute id="money-purchasing">intense</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>The first and largest VR dating app. Join thousands for dates in VR apps like VRChat</summary>
+  </component>
+</components>
\ No newline at end of file
diff --git a/subprojects/gnome-pwa-list/gnome-pwa-list-proprietary.csv b/subprojects/gnome-pwa-list/gnome-pwa-list-proprietary.csv
new file mode 100644
index 0000000..1f13e79
--- /dev/null
+++ b/subprojects/gnome-pwa-list/gnome-pwa-list-proprietary.csv
@@ -0,0 +1,5 @@
+https://twitter.com/,LicenseRef-proprietary,Chat,social-info=intense;social-audio=moderate,adaptive,
+https://www.photopea.com/,LicenseRef-proprietary,Photography;ImageProcessing,social-info=intense,not-adaptive,"Photopea is an advanced photo editor supporting PSD, XCF, Sketch, XD, and CDR formats"
+https://todoist.com/,LicenseRef-proprietary,Office,social-info=moderate,adaptive,"A to-do list to organize your work and life"
+https://www.instagram.com/,LicenseRef-proprietary,Photography;Graphics;Chat,sex-themes=mild;social-chat=intense;social-info=intense;social-audio=intense;social-location=intense;social-contacts=intense;money-advertising=intense,adaptive,"Bringing you closer to the people and things you love"
+https://www.pinterest.com/,LicenseRef-proprietary,Photography;Graphics,drugs-alcohol=mild;sex-nudity=mild;sex-themes=mild;social-chat=intense;social-info=moderate;money-advertising=intense,adaptive,"Discover inspiration for whatever you’re into"
diff --git a/subprojects/gnome-pwa-list/gnome-pwa-list-proprietary.xml b/subprojects/gnome-pwa-list/gnome-pwa-list-proprietary.xml
new file mode 100644
index 0000000..cde0336
--- /dev/null
+++ b/subprojects/gnome-pwa-list/gnome-pwa-list-proprietary.xml
@@ -0,0 +1,144 @@
+<?xml version='1.0' encoding='utf-8'?>
+<components version="0.15">
+  <component type="web-application">
+    <launchable type="url">https://twitter.com/</launchable>
+    <url type="homepage">https://twitter.com/</url>
+    <project_license>LicenseRef-proprietary</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Twitter</name>
+    <id>org.gnome.Software.WebApp_5ea0d5a0681e425022d889f3e355de2f19f92070.desktop</id>
+    <icon type="remote" width="192" height="192">https://abs.twimg.com/responsive-web/client-web-legacy/icon-default.ee534d85.png</icon>
+    <icon type="remote" width="512" height="512">https://abs.twimg.com/responsive-web/client-web-legacy/icon-default-large.8e027b65.png</icon>
+    <screenshots>
+      <screenshot type="default">
+        <image width="586" height="1041">https://abs.twimg.com/responsive-web/client-web-legacy/twitter-lite-data-saver-marketing.68059865.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="586" height="1041">https://abs.twimg.com/responsive-web/client-web-legacy/twitter-lite-explore-marketing.fd45b025.png</image>
+      </screenshot>
+      <screenshot type="default">
+        <image width="586" height="1041">https://abs.twimg.com/responsive-web/client-web-legacy/twitter-lite-timeline-marketing.befcdb45.png</image>
+      </screenshot>
+    </screenshots>
+    <categories>
+      <category>Chat</category>
+      <category>News</category>
+      <category>News</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">intense</content_attribute>
+      <content_attribute id="social-audio">moderate</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>Get breaking news, politics, trending music, world events, sports scores, and the latest global news stories as they unfold - all with less data</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://www.photopea.com/</launchable>
+    <url type="homepage">https://www.photopea.com/</url>
+    <project_license>LicenseRef-proprietary</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Photopea</name>
+    <id>org.gnome.Software.WebApp_b38ea26683d13dabcfbbc10824fcd7f3b88af94b.desktop</id>
+    <icon type="remote" width="512" height="512">https://www.photopea.com/promo/icon512.png</icon>
+    <categories>
+      <category>Photography</category>
+      <category>ImageProcessing</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">intense</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <display_length compare="ge">medium</display_length>
+    </recommends>
+    <summary>Photopea is an advanced photo editor supporting PSD, XCF, Sketch, XD, and CDR formats</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://todoist.com/</launchable>
+    <url type="homepage">https://todoist.com/</url>
+    <project_license>LicenseRef-proprietary</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Todoist</name>
+    <id>org.gnome.Software.WebApp_bafc11e1d98eaadbe4dd47c9f27674df9018cfd1.desktop</id>
+    <icon type="remote" width="192" height="192">https://todoist.com/static/android-chrome-192x192.png</icon>
+    <icon type="remote" width="256" height="256">https://todoist.com/static/android-chrome-256x256.png</icon>
+    <categories>
+      <category>Office</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="social-info">moderate</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>A to-do list to organize your work and life</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://www.instagram.com/</launchable>
+    <url type="homepage">https://www.instagram.com/</url>
+    <project_license>LicenseRef-proprietary</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Instagram</name>
+    <id>org.gnome.Software.WebApp_e730d810bf154c7818b460479ea7826140099a7a.desktop</id>
+    <icon type="remote" width="144" height="144">https://www.instagram.com/static/images/ico/xxhdpi_launcher.png/99cf3909d459.png</icon>
+    <icon type="remote" width="192" height="192">https://www.instagram.com/static/images/ico/xxxhdpi_launcher.png/9fc4bab7565b.png</icon>
+    <categories>
+      <category>Photography</category>
+      <category>Graphics</category>
+      <category>Chat</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="sex-themes">mild</content_attribute>
+      <content_attribute id="social-chat">intense</content_attribute>
+      <content_attribute id="social-info">intense</content_attribute>
+      <content_attribute id="social-audio">intense</content_attribute>
+      <content_attribute id="social-location">intense</content_attribute>
+      <content_attribute id="social-contacts">intense</content_attribute>
+      <content_attribute id="money-advertising">intense</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>Bringing you closer to the people and things you love</summary>
+  </component>
+  <component type="web-application">
+    <launchable type="url">https://www.pinterest.com/</launchable>
+    <url type="homepage">https://www.pinterest.com/</url>
+    <project_license>LicenseRef-proprietary</project_license>
+    <metadata_license>FSFAP</metadata_license>
+    <name>Pinterest</name>
+    <id>org.gnome.Software.WebApp_6a26263aa32636b9fd0352fd6c8da5dca14ef1d7.desktop</id>
+    <icon type="remote" width="192" height="192">https://s.pinimg.com/images/favicon_red_192.png</icon>
+    <categories>
+      <category>Photography</category>
+      <category>Graphics</category>
+    </categories>
+    <content_rating type="oars-1.1">
+      <content_attribute id="drugs-alcohol">mild</content_attribute>
+      <content_attribute id="sex-nudity">mild</content_attribute>
+      <content_attribute id="sex-themes">mild</content_attribute>
+      <content_attribute id="social-chat">intense</content_attribute>
+      <content_attribute id="social-info">moderate</content_attribute>
+      <content_attribute id="money-advertising">intense</content_attribute>
+    </content_rating>
+    <recommends>
+      <control>pointing</control>
+      <control>keyboard</control>
+      <control>touch</control>
+      <display_length compare="ge">small</display_length>
+    </recommends>
+    <summary>Discover inspiration for whatever you’re into</summary>
+  </component>
+</components>
\ No newline at end of file
diff --git a/subprojects/gnome-pwa-list/meson.build b/subprojects/gnome-pwa-list/meson.build
new file mode 100644
index 0000000..b5846f3
--- /dev/null
+++ b/subprojects/gnome-pwa-list/meson.build
@@ -0,0 +1,14 @@
+project('gnome-pwa-list')
+
+python3 = find_program('python3')
+
+gnome_pwa_list_foss = configure_file(
+  input: 'gnome-pwa-list-foss.xml',
+  output: 'gnome-pwa-list-foss.xml',
+  copy: true,
+)
+gnome_pwa_list_proprietary = configure_file(
+  input: 'gnome-pwa-list-proprietary.xml',
+  output: 'gnome-pwa-list-proprietary.xml',
+  copy: true,
+)
diff --git a/subprojects/gnome-pwa-list/pwa-metainfo-generator.py b/subprojects/gnome-pwa-list/pwa-metainfo-generator.py
new file mode 100644
index 0000000..1a827e0
--- /dev/null
+++ b/subprojects/gnome-pwa-list/pwa-metainfo-generator.py
@@ -0,0 +1,215 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# Copyright 2021-2022 Matthew Leeds
+# SPDX-License-Identifier: GPL-2.0+
+
+"""
+Generates AppStream metainfo for a set of Progressive Web Apps
+
+Usage: pwa-metainfo-generator.py LIST.CSV
+
+The CSV format expected looks like this:
+
+https://app.diagrams.net/,Apache-2.0
+https://pinafore.social/,AGPL-3.0-only
+...
+
+The output will be written to a file with the same name as the input but a .xml
+file ending.
+
+This tool uses the web app's manifest to fill out the AppStream info, so an
+Internet connection is required
+"""
+
+import csv
+import sys
+import xml.etree.ElementTree as ET
+import requests
+import json
+import hashlib
+from urllib.parse import urljoin
+from bs4 import BeautifulSoup
+
+# w3c categories: https://github.com/w3c/manifest/wiki/Categories
+# appstream categories: https://specifications.freedesktop.org/menu-spec/latest/apa.html
+# left out due to no corresponding appstream category:
+# entertainment, food, government, kids, lifestyle, personalization, politics, shopping, travel
+w3c_to_appstream_categories = {
+    "books": "Literature",
+    "business": "Office",
+    "education": "Education",
+    "finance": "Finance",
+    "fitness": "Sports",
+    "games": "Game",
+    "health": "MedicalSoftware",
+    "magazines": "News",
+    "medical": "MedicalSoftware",
+    "music": "Music",
+    "navigation": "Maps",
+    "news": "News",
+    "photo": "Photography",
+    "productivity": "Office",
+    "security": "Security",
+    "social": "Chat",
+    "sports": "Sports",
+    "utilities": "Utility",
+    "weather": "Utility"
+}
+
+
+def get_manifest_for_url(url):
+    response = requests.get(url)
+    response.raise_for_status()
+    soup = BeautifulSoup(response.text, 'html.parser')
+
+    # Seems this link is broken for discourse, href value doesn't use quotes
+    if url.startswith('https://discourse.'):
+        manifest_path = '/manifest.webmanifest'
+    elif soup.head:
+        manifest_path = soup.head.find('link', rel='manifest', href=True)['href']
+    else:
+        manifest_path = soup.find('link', rel='manifest', href=True)['href']
+
+    manifest_response = requests.get(urljoin(url, manifest_path))
+    manifest_response.raise_for_status()
+    return json.loads(manifest_response.text)
+
+def copy_metainfo_from_manifest(url, app_component, manifest, categories, content_rating, adaptive, custom_summary):
+    # Short name seems more suitable in practice
+    try:
+      ET.SubElement(app_component, 'name').text = manifest['short_name']
+    except KeyError:
+      ET.SubElement(app_component, 'name').text = manifest['name']
+
+    # Generate a unique app ID that meets the spec requirements. A different
+    # app ID will be used upon install that is determined by the backing browser
+    # Note, the algorithm used here is also used in the epiphany plugin, so it
+    # cannot be changed.
+    hashed_url = hashlib.sha1(url.encode('utf-8')).hexdigest()
+    app_id = 'org.gnome.Software.WebApp_' + hashed_url + '.desktop'
+    ET.SubElement(app_component, 'id').text = app_id
+
+    # Avoid using maskable icons if we can, they don't have nice rounded edges
+    normal_icon_exists = False
+    for icon in manifest['icons']:
+        if 'purpose' not in icon or icon['purpose'] == 'any':
+            normal_icon_exists = True
+
+    for icon in manifest['icons']:
+        if 'purpose' in icon and icon['purpose'] != 'any' and normal_icon_exists:
+            continue
+        icon_element = ET.SubElement(app_component, 'icon')
+        icon_element.text = urljoin(url, icon['src'])
+        icon_element.set('type', 'remote')
+        size = icon['sizes'].split(' ')[-1]
+        icon_element.set('width', size.split('x')[0])
+        icon_element.set('height', size.split('x')[1])
+
+    if 'screenshots' in manifest:
+        screenshots_element = ET.SubElement(app_component, 'screenshots')
+        for screenshot in manifest['screenshots']:
+            screenshot_element = ET.SubElement(screenshots_element, 'screenshot')
+            screenshot_element.set('type', 'default')
+            image_element = ET.SubElement(screenshot_element, 'image')
+            image_element.text = urljoin(url, screenshot['src'])
+            size = screenshot['sizes'].split(' ')[-1]
+            image_element.set('width', size.split('x')[0])
+            image_element.set('height', size.split('x')[1])
+            if 'label' in screenshot:
+                ET.SubElement(screenshot_element, 'caption').text = screenshot['label']
+
+    categories_element = ET.SubElement(app_component, 'categories')
+    user_categories = categories.split(';')
+    for category in user_categories:
+        if len(category) > 0:
+            ET.SubElement(categories_element, 'category').text = category
+    if 'categories' in manifest:
+        for category in manifest['categories']:
+            try:
+                mapped_category = w3c_to_appstream_categories[category]
+                if mapped_category not in user_categories:
+                    ET.SubElement(categories_element, 'category').text = mapped_category
+            except KeyError:
+                pass
+
+    if len(content_rating) > 0:
+        ratings_element = ET.SubElement(app_component, 'content_rating')
+        ratings_element.set('type', 'oars-1.1')
+        content_ratings = content_rating.split(';')
+        for rating in content_ratings:
+            if len(rating) > 0:
+                rating_element = ET.SubElement(ratings_element, 'content_attribute')
+                rating_element.text = rating.split('=')[1]
+                rating_element.set('id', rating.split('=')[0])
+
+    if adaptive in ('adaptive', 'not-adaptive'):
+        recommends_element = ET.SubElement(app_component, 'recommends')
+        ET.SubElement(recommends_element, 'control').text = 'pointing'
+        ET.SubElement(recommends_element, 'control').text = 'keyboard'
+        if adaptive == 'adaptive':
+            ET.SubElement(recommends_element, 'control').text = 'touch'
+        display_element = ET.SubElement(recommends_element, 'display_length')
+        display_element.set('compare', 'ge')
+        if adaptive == 'adaptive':
+            display_element.text = 'small'
+        else:
+            display_element.text = 'medium'
+
+    summary = ''
+    if len(custom_summary) > 0:
+        summary = custom_summary
+    elif 'description' in manifest:
+        summary = manifest['description']
+
+    if len(summary) > 0:
+        # appstreamcli validate recommends summary not ending with '.'
+        if summary.endswith('.'): summary = summary[:-1]
+        # ...and not containing newlines
+        summary = summary.replace('\n', ' ').strip()
+        ET.SubElement(app_component, 'summary').text = summary
+
+def main():
+    if len(sys.argv) != 2 or not sys.argv[1].endswith('.csv'):
+        print('Usage: {} input.csv'.format(sys.argv[0]))
+        sys.exit(1)
+
+    input_filename = sys.argv[1]
+    out_filename = input_filename.replace('.csv', '.xml')
+    with open(input_filename) as input_csv:
+        components = ET.Element('components')
+        components.set('version', '0.15')
+        reader = csv.reader(input_csv)
+        for (i, app) in enumerate(reader):
+            if len(app) != 6:
+                print('Line {} has the wrong number of columns!'.format(i+1), file=sys.stderr)
+                sys.exit(2)
+
+            app_component = ET.SubElement(components, 'component')
+            app_component.set('type', 'web-application')
+
+            launchable = ET.SubElement(app_component, 'launchable')
+            launchable.set('type', 'url')
+            launchable.text = app[0]
+
+            url = ET.SubElement(app_component, 'url')
+            url.set('type', 'homepage')
+            url.text = app[0]
+
+            project_license = ET.SubElement(app_component, 'project_license')
+            project_license.text = app[1]
+
+            # metadata license is a required field but we don't have one, assume FSFAP?
+            metadata_license = ET.SubElement(app_component, 'metadata_license')
+            metadata_license.text = 'FSFAP'
+
+            print('Processing entry \'{}\' from file \'{}\''.format(app[0], input_filename))
+            copy_metainfo_from_manifest(app[0], app_component, get_manifest_for_url(app[0]),
+                                        app[2], app[3], app[4], app[5])
+
+    tree = ET.ElementTree(components)
+    ET.indent(tree)
+    tree.write(out_filename, xml_declaration=True, encoding='utf-8', method='xml')
+
+
+if __name__=='__main__':
+        main()