Garnet is a remote cache-store from Microsoft Research that offers strong performance (throughput and latency), scalability, storage, recovery, cluster sharding, key migration, and replication features. Garnet can work with existing Redis clients.
immudb - immutable database based on zero trust, SQL/Key-Value/Document model, tamperproof, data change history
Fast persistent recoverable log and key-value store + cache, in C# and C++.
An Internet-Scale Database.
Embedded key-value store for read-heavy workloads written in Go
moss - a simple, fast, ordered, persistable, key-val storage library for golang
High-performance write & space optimized transactional storage engine.