head to head · open source
OpenViking vs utopia
OpenViking has 39,947 GitHub stars, 3,177 forks, 999 open issues and last shipped today. utopia has 8,360 stars, 1,156 forks, 27 open issues and last shipped today. OpenViking leads on adoption by 378% (39,947 vs 8,360 stars). OpenViking is written in Python under AGPL-3.0; utopia is written in Rust under Apache-2.0. OpenViking has attracted 8% as many forks as stars, utopia 14%. OpenViking was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (agent-memory, knowledge-base), 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
| OpenViking | utopia | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 8.4K |
| License | AGPL-3.0 | Apache-2.0 |
| Written in | Python | Rust |
| Last push | 2026-10-15 | 2026-10-15 |
| Forks | ⑂ 3.2K | ⑂ 1.2K |
| 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 utopia if
- You want the utopia feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and utopia 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 utopia
Utopia is the world's first open source enterprise world model: a self hosted knowledge substrate with a bitemporal graph and an ontology at its base layer, built by DeepLethe for teams that need agent memory, governed knowledge, and a trustworthy decision core running on hardware they control.
read the full utopia overview →
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Frequently asked questions
Is OpenViking or utopia more popular?
OpenViking has 39,947 GitHub stars and utopia has 8,360. OpenViking has the larger community by that measure.
Are OpenViking and utopia free?
Both are open source. OpenViking is licensed under AGPL-3.0 and utopia under Apache-2.0. Neither carries a licence fee.
What is the difference between OpenViking and utopia?
OpenViking is written in Python and utopia in Rust. 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 utopia?
Choose OpenViking if you want the larger community (39,947 stars) or its AGPL-3.0 licence terms. Choose utopia if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.