Place of kennyz's programs on java, C++, python with sources under the GNU GPL
Notepad++ is a free (as in "free speech" and also as in "free beer") source code editor and Notepad replacement that supports several languages. Running in the MS Windows environment, its use is governed by GPL License.
QElectroTech is a free software (licensed under GNU/GPL) to make electric diagrams. Written in C++ using the Qt4 library, it is freely available for the following platforms: GNU/Linux, Windows and Mac OS.
This site is a repository for karts and tracks which aren't include in the main package of SuperTuxKart, an open-source kart racing game. You can download the addons in your web browser and from within SuperTuxKart. You can also upload your add-ons. This add-ons will be released under an open-source license (Creative Commons or GPL). The site engine (written in php) is also under GPLv3.
Synfig is a powerful, industrial-strength vector-based 2D animation software package, designed from the ground-up for producing feature-film quality 2D animation with fewer people and resources. While there are many other programs currently on the market to aid with the efficient production of 2D animation, we are currently unaware of any other software that can do what our software can. Synfig Studio Project is formed by several pieces: 1) Source Code is licensed under GNU General Public License as published by the Free Software Foundation, either version 2 the License, or any later version 2) Synfig wiki and website is licensed under Creative Commons Attribution-Share Alike 3.0 Unported. http://creativecommons.org/licenses/by-sa/3.0/