I, Librarian is released under the terms of the GPL license.

This version has been released using the GPL license.

Its current reference implementation was released under the GPL license.

The software was released at the same time under the GPL license, in the hope that others would continue to develop its features.

Blink is distributed as free software under version 3 of the GPL license.

The engine is open source and is distributed under the GPL license.

The game is available under the GPL license.

All Si6 public projects are published under the GPL license.

It is free open source software, released under the GPL license.

Next3 is implemented as open-source software, licensed under the GPL license.