head to head · open source
valkey vs centrifugo
valkey has 27,258 GitHub stars, 1,318 forks, 894 open issues and last shipped today. centrifugo has 10,771 stars, 734 forks, 23 open issues and last shipped 6 days ago. valkey leads on adoption by 153% (27,258 vs 10,771 stars). valkey is written in C under BSD-3-Clause; centrifugo is written in Go under Apache-2.0. valkey has attracted 5% as many forks as stars, centrifugo 7%. valkey was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (redis), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| valkey | centrifugo | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 11K |
| License | BSD-3-Clause | Apache-2.0 |
| Written in | C | Go |
| Last push | 2026-09-20 | 2026-09-14 |
| Forks | ⑂ 1.3K | ⑂ 734 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick valkey if
- You weight community size — 27K stars and counting
- You want the BSD-3-Clause license terms
- Your stack matches C
- You value the larger contributor base for long-term maintenance
pick centrifugo if
- You want the centrifugo feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and centrifugo fits your workflow better
About valkey
Valkey is high performance data structure server. Serves key/value workloads first. Supports wide range of native structures plus extensible plugin system for new data structures and access patterns. Written in C, licensed BSD 3 Clause. Lives in key value store and NoSQL ecosystem, shares protocol lineage with Redis, and carries cache , database , key value store , redis , valkey client topics.
read the full valkey overview →
About centrifugo
Centrifugo is an open source, language agnostic real time messaging server that delivers messages to online users over WebSocket, HTTP streaming, Server Sent Events, GRPC, and WebTransport, and it is built for teams that want user facing PUB/SUB without writing and operating the transport layer themselves.
read the full centrifugo overview →
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Frequently asked questions
Is valkey or centrifugo more popular?
valkey has 27,258 GitHub stars and centrifugo has 10,771. valkey has the larger community by that measure.
Are valkey and centrifugo free?
Both are open source. valkey is licensed under BSD-3-Clause and centrifugo under Apache-2.0. Neither carries a licence fee.
What is the difference between valkey and centrifugo?
valkey is written in C and centrifugo in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, valkey or centrifugo?
Choose valkey if you want the larger community (27,258 stars) or its BSD-3-Clause licence terms. Choose centrifugo if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.