Tesseract Open Source OCR Engine (main repository)

diff template library written by C++

Accessibilty tools helper library, used e.g. by screen readers

A graphical editor for creating and editing Text-to-Speech language and voice files.

a skanlite fork with many extra features like direct printing, editing, PDF operations and much more...

A cross-platform, open source, and super fast MUD client with scripting in Lua