The Untangled web framework is a ClojureScript web framework that blends various web development libraries together with a good bit of glue code to make single-page webapps a breeze.
Untangled leverages a lot of things that were pioneered in Om 1.0 by David Nolen, and adds it's own layers of simplification and opinion.
It is a full-stack environment, but you can pick and choose the pieces you wish to use.
We'll discuss the basic idea of the bits you need to develop an Om.Next app and cover how Untangled provides a lot of that for you.
You may want to checkout this overview (https://github.com/awkay/om/wiki/Om-Next-Overview), companion video (https://youtu.be/IlNrmKYA7Ig) as well as the Om.Next quick start (https://github.com/omcljs/om/wiki) and the Untangled tutorial (https://github.com/untangled-web/untangled-tutorial).