WideStudio is an Integrated Development Environment (IDE) for building window applications in C++, Ruby, Python an Perl for Windows, MacOSX, Linux, FreeBSD, SOLARIS and other unix and BTRON and T-Engine. This is open and free (under MIT/X Consortiun Lice
A fork of pidgin which aims to provide minor features that have not been addressed by the pidgin development team (including manual textbox resizing). See funpidgin.sf.net for details.
narim is a GUI file-name encoding converter written in python and pygtk.
Sugar-Cube is flexible IRC bot which was integrated with Medusa Framework. It gives plugin writers very simple and powerful interface with user database, ACL, m17n, i18n, cron job, session handling, reloadable plugin, persistent database, XMLRPC server.