The GazeTk project is an Open Source project and thus lifes from your contribution.

Contributing to the active development of GazeTk:

Mailing Lists

The mailing list for developers can be found here.

Source-Code Repository

If you are a developer, you may have a look at https://opensource.cit-ec.de/projects/gazetk. There you find information about the project and its subprojects, the software repositories, etc.