The expandy-collapsy accordion tabs thing that people love to do on the web is kinda a tricky thing to pull off with in-context editing. Magic Tabs does a great job of providing a flexible solution. Just stick the tab block between the content you want to collapse, and it'll gracefully squish down any kind of block, or set of blocks, into a collapsed div of content.

Super handy for FAQ or product spec type sections.

I was working on converting a Bootstrap-based legacy website to the new Concrete5 8 and the codebase was a bit of a mess.

They were using an old accordion package that was heavily customized to take into accounts some specific area layouts and whatnot...

Each pane of the accordion had a different layout. Some were 1 column, some 2 or 3. Some had content blocks in them and others had page list blocks...

I was pretty sure it was going to be pure hell to keep that functionality when I had a chance to try Magic Tabs.

Problem fixed in less than 15 minutes!!!!

Seriously, that thing is so flexible you can throw pretty much anything at it and it just works and it also can act as an accordion, not just tabs.