Eventsourcing is really a lose set of concepts, and each application of it will look very different. That's also why there are almost no useful frameworks here.

Eventsourcing is really a lose set of concepts, and each application of it will look very different. That's also why there are almost no useful frameworks here. There are some good talks on Youtube about it. The concept is used all over though: Redux (js) is basically a lightweight form of eventsourcing ( with redux-saga being the "process managers" mentioned in the post).