Boost Statechart vs. Meta State Machine

Question

Apparently boost contains two separate libraries for state machines: Statechart and Meta State Machine (MSM). The taglines give very similar descriptions:

• Boost.St

Answer 1

Some time ago I began with Statechart and moved to MSM because it was easier to use in conjunction with asio from a single thread. I did not manage to mesh Statechart and its multithreading capabilities with my use of asio - it was likely some sort of newbie incomprehension of Statechart on my part. I found that MSM was easier to use as it did not address multithreading.