head to head · open source
OpenViking vs devdocs
OpenViking has 40,373 GitHub stars, 3,244 forks, 999 open issues and last shipped today. devdocs has 39,561 stars, 2,656 forks, 196 open issues and last shipped yesterday. OpenViking leads on adoption by 2% (40,373 vs 39,561 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 | 2026-10-20 | 2026-10-19 |
| 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
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 devdocs
DevDocs — API Documentation Browser DevDocs combines multiple developer documentations in a clean and organized web UI with instant search, offline support, mobile version, dark theme, keyboard shortcuts, and more. DevDocs was created by Thibaut Courouble and is operated by freeCodeCamp. We are currently searching for maintainers Please reach out to the community on Discord if you would like to join the team! Keep track of development news: Join the contributors chat room on Discord Watch the repository on GitHub Table of Contents: Quick Start · Vision · App · Scraper · Commands · Contributing · Documentation ·…
read the full devdocs overview →
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Frequently asked questions
Is OpenViking or devdocs more popular?
OpenViking has 40,373 GitHub stars and devdocs has 39,561. 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 (40,373 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.