TuplDB is a high-performance, concurrent, transactional, scalable, low-level embedded database.

Ytk-mp4j is a fast, user-friendly, cross-platform, multi-process, multi-thread collective message passing java library which includes gather, scatter, allgather, reduce-scatter, broadcast, reduce, allreduce communications for distributed machine learning.

Ytk-mp4j is a fast, user-friendly, cross-platform, multi-process, multi-thread collective message passing java library which includes gather, scatter, allgather, reduce-scatter, broadcast, reduce, allreduce communications for distributed machine learning.

unit-testing multi-threaded applications on the JVM made easy

Mastering Concurrency Programming with Java 9, Second Edition, published by Packt