If you are interested in contributing a NetBeans module, we recommend the following steps.
Check whether someone else has already written a plugin that does what you want:
Search the Plugin Portal
In the IDE, choose Tools > Plugins to see lists of all available stable plugins. Do the same in a daily build for plugins still in development.
Assuming that no one else has anything solid, start coding!
If you need web hosting space, a project page, or a file versioning system, we recommend you request a project on java.net or Kenai.com! Remember to put some license notice or at least a copyright on the files that you publish.