https://github.com/cmu-pasta/fray https://github.com/cmu-pasta/fray Fray is a controlled concurrency testing tool for the JVM that supports record and replay.

https://github.com/cmu-pasta/fray https://github.com/cmu-pasta/fray Fray is a controlled concurrency testing tool for the JVM that supports record and replay. It could be a perfect backend for codetracer. (I'm the author of Fray)