head to head · open source
nebula vs schemaspy
nebula has 12,466 GitHub stars, 1,343 forks, 678 open issues and last shipped 2 months ago. schemaspy has 3,736 stars, 357 forks, 303 open issues and last shipped 8 months ago. nebula leads on adoption by 234% (12,466 vs 3,736 stars). nebula is written in C++ under Apache-2.0; schemaspy is written in HTML under LGPL-3.0. nebula has attracted 11% as many forks as stars, schemaspy 10%. nebula 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
| nebula | schemaspy | |
|---|---|---|
| GitHub stars | ★ 12K | ★ 3.7K |
| License | Apache-2.0 | LGPL-3.0 |
| Written in | C++ | HTML |
| Last push | 2026-09-08 | 2026-03-05 |
| Forks | ⑂ 1.3K | ⑂ 357 |
| 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 schemaspy if
- You want the schemaspy feature set and don't need the biggest community
- You prefer the LGPL-3.0 license terms
- Your stack matches HTML
- You evaluated both and schemaspy fits your workflow better
About nebula
English 中文 A distributed, scalable, lightning fast graph database NebulaGraph Introduction NebulaGraph is a popular open source graph database that can handle large volumes of data with milliseconds of latency, scale up quickly, and have the ability to perform fast graph analytics. NebulaGraph has been widely used for social media, recommendation systems, knowledge graphs, security, capital flows, AI, etc. See our users. The following lists some of NebulaGraph features: Symmetrically distributed Storage and computing separation Horizontal scalability Strong data consistency by RAFT protocol OpenCypher compatible…
read the full nebula overview →
About schemaspy
SchemaSpy is a database metadata analyzer. It helps your database administrators and developers visualize, navigate and understand your data model. With an easy to use HTML based report, traversing the entity relationship diagram has never been simpler. Our product showcase is available at Installation SchemaSpy is a standalone application without GUI. Just download the latest JAR file or Docker image and you're ready to go! To use SchemaSpy from Maven, please see the Maven chapter below. For unreleased bug fixes and features in progress, download our snapshot JAR or use Docker tag snapshot Maven SchemaSpy…
read the full schemaspy overview →
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Frequently asked questions
Is nebula or schemaspy more popular?
nebula has 12,466 GitHub stars and schemaspy has 3,736. nebula has the larger community by that measure.
Are nebula and schemaspy free?
Both are open source. nebula is licensed under Apache-2.0 and schemaspy under LGPL-3.0. Neither carries a licence fee.
What is the difference between nebula and schemaspy?
nebula is written in C++ and schemaspy in HTML. 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 schemaspy?
Choose nebula if you want the larger community (12,466 stars) or its Apache-2.0 licence terms. Choose schemaspy if its feature set, stack or LGPL-3.0 licence fits better. Both are self-hostable.