head to head · open source
etcd vs Chroma
etcd has 52,276 GitHub stars, 10,510 forks, 351 open issues and last shipped 2 days ago. Chroma has 29,333 stars, 2,522 forks, 843 open issues and last shipped 2 days ago. etcd leads on adoption by 78% (52,276 vs 29,333 stars). etcd is written in Go under Apache-2.0; Chroma is written in Rust under Apache-2.0. etcd has attracted 20% as many forks as stars, Chroma 9%. Chroma 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 | Chroma | |
|---|---|---|
| GitHub stars | ★ 52K | ★ 29K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Rust |
| Last push | 2026-09-18 | 2026-09-18 |
| Forks | ⑂ 11K | ⑂ 2.5K |
| 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 Chroma if
- You want the Chroma feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and Chroma fits your workflow better
About etcd
etcd is an Apache 2.0 licensed, Go written distributed key value store that holds the most critical data of a distributed system in a Raft replicated log, aimed at the platform and infrastructure engineers who must keep that control plane data consistent and available.
About Chroma
Chroma is an open source vector database designed to store, index, and retrieve embeddings for AI applications. It runs as a local Python or JavaScript client or in client server mode, providing a lightweight infrastructure layer for AI search and retrieval workloads. Built in Rust and licensed under Apache 2.0, it targets developers building RAG, agents, and other embedding dependent systems.
read the full Chroma overview →
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Frequently asked questions
Is etcd or Chroma more popular?
etcd has 52,276 GitHub stars and Chroma has 29,333. etcd has the larger community by that measure.
Are etcd and Chroma free?
Both are open source. etcd is licensed under Apache-2.0 and Chroma under Apache-2.0. Neither carries a licence fee.
What is the difference between etcd and Chroma?
etcd is written in Go and Chroma 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 Chroma?
Choose etcd if you want the larger community (52,276 stars) or its Apache-2.0 licence terms. Choose Chroma if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.