We have lots of free Unity goodies available on GitHub so be sure to give them a look!

Read the release notes before updating any plugin! Important information may be present.
Our new build system will be going live for all plugins. You can opt-in to using the new build system very easily. Simply move any plugin folders from the Editor/PLUGIN_NAME folder to the Editor/Prime31/PLUGIN_NAME folder. See this 7 second video for an example. You can toggle the build system logging via the Tools -> prime[31] menu item (hint: very handy for reporting bugs if you find them!).
All plugin updates from January 1st will no longer be tested in Unity 4.x. If you are still using Unity 4.x download any plugins you will need ASAP and do not download any future updates!