Support Forum: http://discuss.ardupilot.org/
Community Site: http://ardupilot.org
Github repository: https://github.com/ArduPilot/ardupilot
Main developer wiki: http://dev.ardupilot.org
Developer discussion: http://discuss.ardupilot.org
Developer email group: drones-discuss@googlegroups.com. Deprecated November 2016. Included for historical reference.
The ArduPilot project is open source and we encourage participation and code contributions: guidelines for contributors to the ardupilot codebase
We have an active group of Beta Testers especially for ArduCopter to help us find bugs: release procedures
Desired Enhancements and Bugs can be posted to the issues list.
Helping other users with log analysis on http://discuss.ardupilot.org/ is always appreciated:
There is a group of wiki editors as well in case documentation is your thing: ardu-wiki-editors@googlegroups.com
Developer discussions occur on drones-discuss@google-groups.com
The ArduPilot project is licensed under the GNU General Public
License, version 3.
Ardupilot is comprised of several parts, vehicles and boards. The list below
contains the people that regularly contribute to the project and are responsible
for reviewing patches on their specific area. See CONTRIBUTING.md for more information.