head to head · open source
nebula vs MimirQ
nebula has 12,398 GitHub stars, 1,329 forks, 678 open issues and last shipped 12 days ago. MimirQ has 552 stars, 86 forks, 4 open issues and last shipped 4 days ago. nebula leads on adoption by 2,146% (12,398 vs 552 stars). nebula is written in C++ under Apache-2.0; MimirQ is written in Python under Apache-2.0. nebula has attracted 11% as many forks as stars, MimirQ 16%. MimirQ was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (graphrag, knowledge-base, knowledge-graph), 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
| nebula | MimirQ | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 552 |
| License | Apache-2.0 | Apache-2.0 |
| Written in | C++ | Python |
| Last push | 2026-09-08 | 2026-09-16 |
| Forks | ⑂ 1.3K | ⑂ 86 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick nebula if
- You weight community size — 12K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick MimirQ if
- You want the MimirQ feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and MimirQ fits your workflow better
About nebula
NebulaGraph is an open source, distributed graph database written in C++ and released under the Apache 2.0 license. It lives in the graph database ecosystem and appears in the CNCF Database Landscape. The project describes itself as symmetrically distributed, with storage and computing separated into distinct layers, horizontal scalability across nodes, strong data consistency enforced through the RAFT protocol, an OpenCypher compatible query language, role based access control, and a set of graph analytics algorithms. It has been developed for roughly eight years and carries 12,387 stars, 1,330 forks, and 678 op…
read the full nebula overview →
About MimirQ
MimirQ is a Chinese first, Apache 2.0 licensed enterprise RAG knowledge base written in Python that makes every stage of a document question answering pipeline — parsing, governance, chunking, indexing, retrieval, reranking, citation and regression testing — inspectable, replaceable and versioned, and it is built for teams that must audit and hand over enterprise knowledge bases rather than ship a prototype.
read the full MimirQ overview →
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Frequently asked questions
Is nebula or MimirQ more popular?
nebula has 12,398 GitHub stars and MimirQ has 552. nebula has the larger community by that measure.
Are nebula and MimirQ free?
Both are open source. nebula is licensed under Apache-2.0 and MimirQ under Apache-2.0. Neither carries a licence fee.
What is the difference between nebula and MimirQ?
nebula is written in C++ and MimirQ in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, nebula or MimirQ?
Choose nebula if you want the larger community (12,398 stars) or its Apache-2.0 licence terms. Choose MimirQ if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.