head to head · open source
TiDB vs Chroma
TiDB has 40,553 GitHub stars, 6,243 forks, 6,976 open issues and last shipped today. Chroma has 29,333 stars, 2,522 forks, 843 open issues and last shipped 2 days ago. TiDB leads on adoption by 38% (40,553 vs 29,333 stars). TiDB is written in Go under Apache-2.0; Chroma is written in Rust under Apache-2.0. TiDB has attracted 15% as many forks as stars, Chroma 9%. TiDB was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (ai, 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
| TiDB | Chroma | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 29K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Rust |
| Last push | 2026-09-20 | 2026-09-18 |
| Forks | ⑂ 6.2K | ⑂ 2.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick TiDB if
- You weight community size — 41K 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 TiDB
TiDB is an open source, cloud native, distributed SQL database written in Go and licensed under Apache 2.0, aimed at teams that need ACID transactions, real time analytics, and vector search at scale without data silos.
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 TiDB or Chroma more popular?
TiDB has 40,553 GitHub stars and Chroma has 29,333. TiDB has the larger community by that measure.
Are TiDB and Chroma free?
Both are open source. TiDB is licensed under Apache-2.0 and Chroma under Apache-2.0. Neither carries a licence fee.
What is the difference between TiDB and Chroma?
TiDB 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, TiDB or Chroma?
Choose TiDB if you want the larger community (40,553 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.