- The ArduPilot project is open source and we encourage participation and code contributions: [guidelines for contributors to the ardupilot codebase](http://dev.ardupilot.org/wiki/guidelines-for-contributors-to-the-apm-codebase)
- The ArduPilot project is open source and we encourage participation and code contributions: [guidelines for contributors to the ardupilot codebase](http://ardupilot.org/dev/docs/contributing.html)
- We have an active group of Beta Testers especially for ArduCopter to help us find bugs: [release procedures](http://dev.ardupilot.org/wiki/release-procedures)