head to head · open source
Milvus vs Chat2DB
Milvus has 46,598 GitHub stars, 4,328 forks, 1,405 open issues and last shipped today. Chat2DB has 28,354 stars, 3,047 forks, 269 open issues and last shipped 3 days ago. Milvus leads on adoption by 64% (46,598 vs 28,354 stars). Milvus is written in Go under Apache-2.0; Chat2DB is written in Java under a custom or non-standard licence. Milvus has attracted 9% as many forks as stars, Chat2DB 11%. Milvus was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm), 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
| Milvus | Chat2DB | |
|---|---|---|
| GitHub stars | ★ 47K | ★ 28K |
| License | Apache-2.0 | Custom / other |
| Written in | Go | Java |
| Last push | 2026-11-05 | 2026-11-02 |
| Forks | ⑂ 4.3K | ⑂ 3.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Milvus if
- You weight community size — 47K 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 Chat2DB if
- You want the Chat2DB feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Java
- You evaluated both and Chat2DB fits your workflow better
About Milvus
What is Milvus? 🐦 Milvus is a high performance vector database built for scale. It powers AI applications by efficiently organizing and searching vast amounts of unstructured data, such as text, images, and multi modal information. 🧑💻 Written in Go and C++, Milvus implements hardware acceleration for CPU/GPU to achieve best in class vector search performance. Thanks to its fully distributed and K8s native architecture, Milvus can scale horizontally, handle tens of thousands of search queries on billions of vectors, and keep data fresh with real time streaming updates. Milvus also supports Standalone mode for…
read the full Milvus overview →
About Chat2DB
Powered by OtterMind An AI powered database client and SQL workspace for developers, DBAs, analysts, and data teams. What is Chat2DB? Chat2DB Community is a free, cross platform database client for Windows, macOS, and Linux. It runs entirely on your machine and combines a full featured SQL workspace with an AI assistant that you connect to your own model. 40+ databases — MySQL, PostgreSQL, Oracle, SQL Server, ClickHouse, MongoDB, Redis, SQLite, MariaDB, TiDB, Hive, DB2, Snowflake, BigQuery, Elasticsearch, Trino, TimescaleDB, Greenplum, YugabyteDB, CrateDB, QuestDB, Apache IoTDB, Firebird, HSQLDB, Apache Derby…
read the full Chat2DB overview →
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Frequently asked questions
Is Milvus or Chat2DB more popular?
Milvus has 46,598 GitHub stars and Chat2DB has 28,354. Milvus has the larger community by that measure.
Are Milvus and Chat2DB free?
Both are open source. Milvus is licensed under Apache-2.0, and Chat2DB has no licence declared in this registry. Both are free to self-host.
What is the difference between Milvus and Chat2DB?
Milvus is written in Go and Chat2DB in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Milvus or Chat2DB?
Choose Milvus if you want the larger community (46,598 stars) or its Apache-2.0 licence terms. Choose Chat2DB if its feature set, stack or Custom / other licence fits better. Both are self-hostable.