Libre Licenses

Each piece of material on this website is individually copyrighted by its own author. However, you have the right to download and use it all under the terms of Creative Commons or GNU GPL licenses as described below. They follow the concept of copyleft to guarantee the same degree of freedom is preserved in derivative works.

Creative Material

Unless specified otherwise, you can freely use all the audio, video and text material available on for non-commercial purposes. You can also reuse it in your own personal stuff as long as you keep the same license for derivative works. To be precise about what you can actually do, see the terms of the Creative Commons BY-NC-SA license.

Note: Commercial use of the material may be allowed at the discretion of the author. Please get in touch by email if you wish to discuss the matter.


Unless specified otherwise, all software on is distributed under the terms of the GNU GPL v3 license. This means it is free software, and derivative works must also be distributed under the terms of the same GPL license.

Of course, writing good software requires a great deal of creativity. But a software program is more of a tool providing a means to produce original material than a creative work in itself. Material generated by a free software program belongs entirely to the user, who is free to license and distribute it under the license terms of their choice (or keep it for themselves).