[ychetyrko]

There is a new alternative to MobX/MST - Reactronic:

https://github.com/Nezaboodka/reactronic#readme

It is transactionally reactive state management library for JavaScript. Key difference from MobX/MST is that Reactronic doesn't enforce developers to stick with MST rules of building the structure of state - the state can be a set (graph) of usual JS objects.

Also, Reactronic has minimal set of concepts, just three: State, Transaction, and Cache. So, it is easier to use.

Drawback is that it's a new thing and is not yet battle tested.