Documentation for ZenPack Development - Dozens of documents showing you how to get started in developing ZenPacks
Documentaton for Core Development - Official PDF doc for developing within our environment; also has ZenPack dev info
Forum for ZenPack Developers - Discuss, ask questions, and look up past answered questions
Community Wiki - Freeform community information on various advanced topics
Zenoss Core is developed collaboratively with our community of users. Most developers tend to provide their own discrete bits of code via ZenPacks (plugins). Additionally, everyone is welcome to submit patches and bugs to our Zenoss Core product via our public Trac instance (user/pass zenoss/zenoss).
Zenoss does accept user contributions to the core codebase using the below procedure. If you want to submit a ZenPack, please reference The ZenPack Development Process.