People are posting Open Source & community EventSourcing projects and resources on our #ESRC21 Miro board, so check these out:
Occurrent, Event Sourcing Utilities for the JVM occurrent.org
Dolittle is an Open-source Decentralized, Distributed, Event-Driven, Microservice Platform built to harness the power of Events.
It provides a runtime as well as SDKs written for C# and TypeScript developers dolittle.io