The plugins listed here aren't ready for prime time yet. Either they're still being born (Under Development) or they're just a twinkle in the eye (Wish List).
If you've got a plugin you'd like to add to the "under development" list, check out the guidelines for hosting on the forge
If you've got questions about any of the plugins listed on this page, either under development or in the wish list, join the SonarQube developer list and ask them there.
Plugins Under Development
These plugins are currently under development. There is no timeline for their release or guarantee that they will ever be released.
You'd like to contribute to SonarQube but don't have a killer idea to start from. Here are some suggestions of possible plugins: