Spark - Plugins

I am looking for any and all Spark plugins anyone knows of, I am compiling a centralized list of them with information regarding each one.

Spark plugins are available in Plugins menu

Well I have seen all of those, but there are many others which can be added

They have a shared whiteboard, shared text editor (both of which are a God send for real-time collaboration. And they have a RSS feed reader plugin.

I knew about these, just wasn’t sure they are still compatible with the current Spark version.