Eventuate is a toolkit for building distributed, highly-available and partition-tolerant event-sourced applications. It is written in Scala and built on top of Akka, a toolkit for building highly concurrent, distributed, and resilient message-driven applications on the JVM. Eventuate

• derives current application state from logged events (event sourcing)
• replicates application state by replicating events across multiple locations
• allows updates to replicated state at multiple locations concurrently (multi-master)
• allows individual locations to continue writing even if they are partitioned from other locations
• provides means to detect, track and resolve conflicting updates (interactive and automated)
• enables reliable event collaboration between event-sourced microservices
• enables applications to implement a causal consistency model
• preserves causal ordering of replicated events
• provides implementations of operation-based CRDTs
• supports distribution up to global scale

Find out more in the introduction and the project documentation.