head to head · open source
OpenViking vs zeal
OpenViking has 41,383 GitHub stars, 3,362 forks, 999 open issues and last shipped yesterday. zeal has 12,865 stars, 852 forks, 107 open issues and last shipped 3 days ago. OpenViking leads on adoption by 222% (41,383 vs 12,865 stars). OpenViking is written in Python under AGPL-3.0; zeal is written in C++ under GPL-3.0. OpenViking has attracted 8% as many forks as stars, zeal 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 | zeal | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 13K |
| License | AGPL-3.0 | GPL-3.0 |
| Written in | Python | C++ |
| Last push | 2026-11-02 | 2026-10-31 |
| Forks | ⑂ 3.4K | ⑂ 852 |
| 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 zeal if
- You want the zeal feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches C++
- You evaluated both and zeal 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 zeal
Zeal Zeal is an offline documentation browser: your personal reference library, searchable in an instant and available without a connection. Originally inspired by Dash, it supports the same docset format. Download Binary builds for Windows and other installation options are available on the download page. Windows builds require Windows 10 version 1809 or later. How to use After installing Zeal, go to File → Docset Library , select the docsets you want, and click the Download button. Query and filter docsets Limit the search scope by prefixing your query with a docset name and a colon: cpp:vector To search…
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Frequently asked questions
Is OpenViking or zeal more popular?
OpenViking has 41,383 GitHub stars and zeal has 12,865. OpenViking has the larger community by that measure.
Are OpenViking and zeal free?
Both are open source. OpenViking is licensed under AGPL-3.0 and zeal under GPL-3.0. Neither carries a licence fee.
What is the difference between OpenViking and zeal?
OpenViking is written in Python and zeal in C++. 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 zeal?
Choose OpenViking if you want the larger community (41,383 stars) or its AGPL-3.0 licence terms. Choose zeal if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.