Collection of tools for modifying the game Warcraft III: The Frozen Throne including frameworks such as "wc3lib" and "Advanced Script Library".
Eclipse plug-in for working with OpenOCD.
Slice of pyE is an EiffelStudio extension to embed Python. Once embedded users/developers can execute python scripts that manipulate the UI/active project or extend the EiffelStudio user interface to support new tools and functionality.
The Scratch mod, Tiger
This mod of Scratch (scratch.mit.edu) will add several new features, including an extensive plugin API. It is currently developed by the Scratch user SJRCS_011.
YAHE is Yet Another HTML Editor that helps to create Webstites easily. It is not a WYSIWYG Tool but a comfortable Sourceeditor with functions that a Webdeveloper needs.