head to head · open source
OpenViking vs schemaspy
OpenViking has 41,383 GitHub stars, 3,362 forks, 999 open issues and last shipped yesterday. schemaspy has 3,736 stars, 357 forks, 303 open issues and last shipped 8 months ago. OpenViking leads on adoption by 1,008% (41,383 vs 3,736 stars). OpenViking is written in Python under AGPL-3.0; schemaspy is written in HTML under LGPL-3.0. OpenViking has attracted 8% as many forks as stars, schemaspy 10%. OpenViking 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
| OpenViking | schemaspy | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 3.7K |
| License | AGPL-3.0 | LGPL-3.0 |
| Written in | Python | HTML |
| Last push | 2026-11-02 | 2026-03-05 |
| Forks | ⑂ 3.4K | ⑂ 357 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenViking if
- You weight community size — 41K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Python
- 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 OpenViking
The Context Database for AI Agents English / 中文 / 日本語 Website · Live Demo · GitHub · Issues · Docs · Blog Lark · WeChat · Discord · X What is OpenViking OpenViking is an open source context database for AI agents — one filesystem for everything an agent knows: knowledge, memory, and skills. Most agent memory is a black box: text goes in, embeddings come out, and nobody can see what was actually stored. OpenViking organizes context as a virtual filesystem under viking:// instead. Agents navigate it like files — ls , tree , read , write , grep — and you can open any directory to inspect and edit what your agent…
read the full OpenViking 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 OpenViking or schemaspy more popular?
OpenViking has 41,383 GitHub stars and schemaspy has 3,736. OpenViking has the larger community by that measure.
Are OpenViking and schemaspy free?
Both are open source. OpenViking is licensed under AGPL-3.0 and schemaspy under LGPL-3.0. Neither carries a licence fee.
What is the difference between OpenViking and schemaspy?
OpenViking is written in Python 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, OpenViking or schemaspy?
Choose OpenViking if you want the larger community (41,383 stars) or its AGPL-3.0 licence terms. Choose schemaspy if its feature set, stack or LGPL-3.0 licence fits better. Both are self-hostable.