head to head · open source
OpenViking vs devdocs
OpenViking has 39,947 GitHub stars, 3,177 forks, 999 open issues and last shipped today. devdocs has 39,550 stars, 2,654 forks, 196 open issues and last shipped 3 days ago. OpenViking leads on adoption by 1% (39,947 vs 39,550 stars). OpenViking is written in Python under AGPL-3.0; devdocs is written in Ruby under MPL-2.0. OpenViking has attracted 8% as many forks as stars, devdocs 7%. 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 | devdocs | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 40K |
| License | AGPL-3.0 | MPL-2.0 |
| Written in | Python | Ruby |
| Last push | 2026-10-15 | 2026-10-12 |
| Forks | ⑂ 3.2K | ⑂ 2.7K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenViking if
- You weight community size — 40K 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 devdocs if
- You want the devdocs feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches Ruby
- You evaluated both and devdocs fits your workflow better
About OpenViking
OpenViking is an open source context database for AI agents that keeps everything an agent knows — knowledge, memory, and skills — in one virtual filesystem, built for developers and teams who need to inspect and edit what their agent actually stored instead of trusting an opaque embedding index.
read the full OpenViking overview →
About devdocs
DevDocs is an API documentation browser that combines multiple developer documentations into a single, clean and organized web UI with instant search, offline support, a mobile version, a dark theme and keyboard shortcuts, and it is aimed at developers who need to read and search API and reference documentation quickly.
read the full devdocs overview →
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Frequently asked questions
Is OpenViking or devdocs more popular?
OpenViking has 39,947 GitHub stars and devdocs has 39,550. OpenViking has the larger community by that measure.
Are OpenViking and devdocs free?
Both are open source. OpenViking is licensed under AGPL-3.0 and devdocs under MPL-2.0. Neither carries a licence fee.
What is the difference between OpenViking and devdocs?
OpenViking is written in Python and devdocs in Ruby. 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 devdocs?
Choose OpenViking if you want the larger community (39,947 stars) or its AGPL-3.0 licence terms. Choose devdocs if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.