tesseract: Tesseract (Open source OCR engine) tesseract: tesseract: A commercial quality OCR engine originally developed at HP between tesseract: 1985 and 1995. In 1995, this engine was among the top 3 evaluated by tesseract: UNLV. It was open-sourced by HP and UNLV in 2005. tesseract: tesseract: This package install language data for: tesseract: tesseract: Dutch, Spanish, German, Italian, French, English, Portuguese tesseract: tesseract: