Open source key-value projects
Every project in the registry tagged key-value, ranked by real GitHub adoption.
Distributed reliable key-value store for the most critical data of a distributed system
Blazing-fast in-memory data store for modern applications
A flexible distributed key-value database that is optimized for caching and other realtime workloads.
Fast key-value DB in Go.
Apache ZooKeeper
Redis re-implemented with SQL
Distributed, in-memory key/value store and cache. It can be used as an embedded Go library and a language-independent service.
ArcadeDB Multi-Model Database, one DBMS that supports SQL, Cypher, Gremlin, HTTP/JSON, MongoDB and Redis. ArcadeDB is a conceptual fork of OrientDB, the first M
Related tags
Frequently asked questions
How many open source key-value projects are there?
This registry tracks 8 projects tagged key-value, with 149,794 GitHub stars between them. The most-adopted is etcd at 52,441 stars.
Are these key-value projects free to use?
Yes — 7 of the 8 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which key-value project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these key-value projects still maintained?
7 of the 8 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.