PyDev is a Python Development Environment (Python IDE plugin for Eclipse). It features an editor with code completion, code analysis, refactoring, outline view, debugger, mark occurrences and other goodies - check http://pydev.org for more details). It's kept going by community contributions, so, if you think it's a worthy project, please contribute through http://pydev.org
ePen - A cross platform tool for creative writers and book authors. ePen is able to manage all information around a book project: The actual text, descriptions of the characters and scenes, the storyline.
Hali-sy is a Meta project that is aimed at fully supporting the Arabic language for most popular open-source projects