head to head · open source
etcd vs sonic
etcd has 52,441 GitHub stars, 10,552 forks, 351 open issues and last shipped yesterday. sonic has 21,373 stars, 621 forks, 63 open issues and last shipped 4 days ago. etcd leads on adoption by 145% (52,441 vs 21,373 stars). etcd is written in Go under Apache-2.0; sonic is written in Rust under MPL-2.0. etcd has attracted 20% as many forks as stars, sonic 3%. etcd was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (database), 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
| etcd | sonic | |
|---|---|---|
| GitHub stars | ★ 52K | ★ 21K |
| License | Apache-2.0 | MPL-2.0 |
| Written in | Go | Rust |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 11K | ⑂ 621 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick etcd if
- You weight community size — 52K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick sonic if
- You want the sonic feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches Rust
- You evaluated both and sonic fits your workflow better
About etcd
etcd Note : The main branch may be in an unstable or even broken state during development. For stable versions, see [releases][github release]. etcd is a distributed reliable key value store for the most critical data of a distributed system, with a focus on being: Simple : well defined, user facing API (gRPC) Secure : automatic TLS with optional client cert authentication Fast : benchmarked 10,000 writes/sec Reliable : properly distributed using Raft etcd is written in Go and uses the [Raft][] consensus algorithm to manage a highly available replicated log. etcd is used in production by many companies, and the…
About sonic
Sonic Sonic is a fast, lightweight and schema less search backend. It ingests search texts and identifier tuples that can then be queried against in a microsecond's time. Sonic can be used as a simple alternative to super heavy and full featured search backends such as Elasticsearch in some use cases. It is capable of normalizing natural language search queries, auto completing a search query and providing the most relevant results for a query. Sonic is an identifier index, rather than a document index; when queried, it returns IDs that can then be used to refer to the matched documents in an external database…
read the full sonic overview →
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Frequently asked questions
Is etcd or sonic more popular?
etcd has 52,441 GitHub stars and sonic has 21,373. etcd has the larger community by that measure.
Are etcd and sonic free?
Both are open source. etcd is licensed under Apache-2.0 and sonic under MPL-2.0. Neither carries a licence fee.
What is the difference between etcd and sonic?
etcd is written in Go and sonic in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, etcd or sonic?
Choose etcd if you want the larger community (52,441 stars) or its Apache-2.0 licence terms. Choose sonic if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.