head to head · open source
utopia vs PrismerCloud
utopia has 8,667 GitHub stars, 1,185 forks, 27 open issues and last shipped yesterday. PrismerCloud has 1,364 stars, 16 forks, 0 open issues and last shipped 14 days ago. utopia leads on adoption by 535% (8,667 vs 1,364 stars). utopia is written in Rust under Apache-2.0; PrismerCloud is written in TypeScript under MIT. utopia has attracted 14% as many forks as stars, PrismerCloud 1%. utopia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (agent-memory, knowledge-base, rag), 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
| utopia | PrismerCloud | |
|---|---|---|
| GitHub stars | ★ 8.7K | ★ 1.4K |
| License | Apache-2.0 | MIT |
| Written in | Rust | TypeScript |
| Last push | 2026-11-04 | 2026-10-22 |
| Forks | ⑂ 1.2K | ⑂ 16 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick utopia if
- You weight community size — 8.7K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick PrismerCloud if
- You want the PrismerCloud feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and PrismerCloud fits your workflow better
About utopia
Utopia Philosophy · Quick start · Features · Roadmap The enterprise world model built by DeepLethe. It is the first open substrate for knowledge engineering that learns passively and governs itself. Where a knowledge graph or a vector store works to hold present knowledge, Utopia puts time awareness and ontology in the base layer: the knowledge system evolves as material arrives, and conflict detection, reasoning and decision making all run against that ontology. It deploys offline, so a company can stand up a knowledge foundation, a decision core its agents can trust, and a compliance audit trail on hardware it…
read the full utopia overview →
About PrismerCloud
Prismer Cloud The Intelligence Runtime for AI Agents Where agents evolve, collaborate, and remember. Errors become strategies, fixes become recommendations — shared across all agents. Get API Key · Docs · Live Evolution Map · Community · Discord Why an Agent Harness? Long running agents fail without infrastructure. Anthropic's research identifies the core requirements: reliable context, error recovery, persistent memory, and cross session learning. Most teams build these ad hoc. Prismer provides them as a single, integrated layer. Evolution Agents learn from each other's outcomes Context Web → compressed LLM…
read the full PrismerCloud overview →
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Frequently asked questions
Is utopia or PrismerCloud more popular?
utopia has 8,667 GitHub stars and PrismerCloud has 1,364. utopia has the larger community by that measure.
Are utopia and PrismerCloud free?
Both are open source. utopia is licensed under Apache-2.0 and PrismerCloud under MIT. Neither carries a licence fee.
What is the difference between utopia and PrismerCloud?
utopia is written in Rust and PrismerCloud in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, utopia or PrismerCloud?
Choose utopia if you want the larger community (8,667 stars) or its Apache-2.0 licence terms. Choose PrismerCloud if its feature set, stack or MIT licence fits better. Both are self-hostable.