* [etcd v3.6.12](https://github.com/etcd-io/etcd) – Distributed reliable key-value store for critical data in distributed systems. * [NoKV v0.9.0](https://github.com/feichai0017/NoKV) – High-performance distributed key-value engine combining LSM-tree storage, value-log separation, MVCC, and multi-Raft replication.