Required Baseline Functionality

This plugin shores up a gap in the WordPress core. The ability of this plugin, quite simply, should be part of the baseline WordPress. Until it is, “Groups” feels as native and as “expected” as you could hope, and delivers on every one of it’s promises.

It’s biggest feature (beyond working with many things right out of the box) is it’s API documentation. They don’t tout it nearly as well as it should be, but the documentation has made it possible for me to quickly and easily integrate groups into my custom code and other plugins with minimal effort.

If you aren’t using this plugin yet, you’re missing out.