head to head · open source
Milvus vs WatermelonDB
Milvus has 46,578 GitHub stars, 4,327 forks, 1,405 open issues and last shipped yesterday. WatermelonDB has 11,796 stars, 663 forks, 304 open issues and last shipped 2 months ago. Milvus leads on adoption by 295% (46,578 vs 11,796 stars). Milvus is written in Go under Apache-2.0; WatermelonDB is written in JavaScript under MIT. Milvus has attracted 9% as many forks as stars, WatermelonDB 6%. Milvus was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | WatermelonDB | |
|---|---|---|
| GitHub stars | ★ 47K | ★ 12K |
| License | Apache-2.0 | MIT |
| Written in | Go | JavaScript |
| Last push | 2026-11-04 | 2026-09-16 |
| Forks | ⑂ 4.3K | ⑂ 663 |
| 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 WatermelonDB if
- You want the WatermelonDB feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and WatermelonDB 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 WatermelonDB
A reactive database framework Build powerful React and React Native apps that scale from hundreds to tens of thousands of records and remain fast ⚡️ Why Watermelon? WatermelonDB is a new way of dealing with user data in React Native and React web apps. It's optimized for building complex applications in React Native, and the number one goal is real world performance . In simple words, your app must launch fast . For simple apps, using Redux or MobX with a persistence adapter is the easiest way to go. But when you start scaling to thousands or tens of thousands of database records, your app will now be slow to…
read the full WatermelonDB overview →
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Frequently asked questions
Is Milvus or WatermelonDB more popular?
Milvus has 46,578 GitHub stars and WatermelonDB has 11,796. Milvus has the larger community by that measure.
Are Milvus and WatermelonDB free?
Both are open source. Milvus is licensed under Apache-2.0 and WatermelonDB under MIT. Neither carries a licence fee.
What is the difference between Milvus and WatermelonDB?
Milvus is written in Go and WatermelonDB in JavaScript. 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 WatermelonDB?
Choose Milvus if you want the larger community (46,578 stars) or its Apache-2.0 licence terms. Choose WatermelonDB if its feature set, stack or MIT licence fits better. Both are self-hostable.