Contributing doesn't always mean having code repository commit access. In fact, some of the best open source contributors never have commit access. In order for Quartz to be successful, we rely on help in many areas other than writing software. These include:
Submitting bug reports (with patches!)
Writing documentation (esp. based on common issues in the forums)
Helping out in the forums
We recognize people who help out in any way by adding their name as a contributor to the development team. Every person listed there has helped in some way, big or small, to make Quartz what it is today. Without them, the project certainly would not be the same. With that said, we know that some people are especially interested in writing software...
Authorship record of code modules and/or documentation is also maintained to give credit where credit is due.
Have you built a great new feature for Quartz? Drop us a note on the developer's mailing list or file a feature enhancement request in our issue tracker and let us know about it. We gladly, and regularly accept contributions. Contributor's are given credit for their work, though they must be willing (for licensing purposes) to release copyright of the work. A "Contributor Agreement" document must be filled-out and sent to Terracotta - indicating that you assign the copyright of the work to the Quartz project. This document only needs to be filled out once per contributor - not once for each contribution.
Becoming a Quartz Developer
Becoming a core developer for Quartz is on an invite-only basis. The project leaders look for people who have submitted bug reports (with patches), helped out with writing documentation, stay active in the community forums, or make code contributions. In addition to all these, developers must demonstrate a strong desire to see the project be successful. This is typically done by staying in touch with the project leaders, following up on reported bugs, and generally offering assistance.