Best of · 5 tools ranked

The best In-memory data stores & caching

Every option ranked — open-source, self-hostable, and commercial — by our transparent Sovereignty Score, with honest trade-offs so you choose what fits you, not us.

The cache in front of your database. The category that proved a licence can be taken away — and, unusually, given back.

L3Infrastructure — layer 3 of the AI stack

1
Valkey
Top pickOpen source
The Linux Foundation fork — same Redis, governance that cannot be revoked.
Free and open source. Managed offerings from AWS, Google and others. · in our Redis comparison →
96
sovereignty
What is Valkey? →
2
Memcached
Open source
The one that only caches — and does it without ceremony.
Free and open source. · in our Redis comparison →
95
sovereignty
What is Memcached? →
3
Garnet
Open source
Microsoft Research's cache — MIT, and unusually fast under contention.
Free and open source. · in our Redis comparison →
92
sovereignty
What is Garnet? →
4
KeyDB
Open source
The earlier fork — multithreaded Redis, BSD, now Snap-owned.
Free and open source. · in our Redis comparison →
89
sovereignty
What is KeyDB? →
5
DragonflyDB
Commercial
Redis-compatible, built for modern multi-core machines.
Free to self-host within BSL terms. Dragonfly Cloud is paid. · in our Redis comparison →
70
sovereignty
What is DragonflyDB? →

Replacing a specific tool?

Head-to-head comparisons for each popular in-memory data stores & caching product.

Alternatives to Redis

5 vetted options · top pick Valkey

Straight head-to-heads

Two in-memory data stores & caching tools, side by side — verified facts and a plain verdict.

Valkey vs Memcached→Valkey vs Garnet→Valkey vs KeyDB→Valkey vs DragonflyDB→Memcached vs Garnet→Memcached vs KeyDB→Memcached vs DragonflyDB→Garnet vs KeyDB→Garnet vs DragonflyDB→KeyDB vs DragonflyDB→

Valkey

Memcached

Garnet

KeyDB

DragonflyDB

Replacing a specific tool?

Alternatives to Redis

Straight head-to-heads

New swaps, worth your inbox.