Fulcra vs Rhyven
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Fulcra compared with Rhyven
| Detail | F
Fulcra | 
Rhyven |
|---|
| What it does | The user-owned context backend for AI agents
| Marketplace and runtime for headless, agent-first apps
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| Stage | Growing
| Not given
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| Founded | Not given
| Not given
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| Based in | US
| Not given
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| Pricing model | Freemium
| Open source
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| Pricing | Not given
| Not given
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| Key features | - One user-owned context for every agent
- Agents wake up to what changed since their last loop
- Readable, traceable context with every change logged
- End-to-end encryption with AES-256
- Granular sharing controls with revocable access
- Right to export, delete, and transparency
- Context that travels across AI products and models
| - Install agent-first apps without graphical interface
- Connect via MCP or REST protocols
- Browse and install from marketplace
- Run apps locally on your server or computer
- Share app results between connected agents
- Build custom apps using Python, JavaScript or containers
- Test improvements before reusing apps
- Keep apps private or publish to marketplace
- Optional runner to track tasks without model API agent
- Linux x86-64 and ARM64 support
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| What makes it different | - User-owned context that travels with you across AI products
- Traceable agent activity with full visibility and control
- Agents coordinate through shared context without learning being trapped in silos
- End-to-end encryption with no data selling
| - Data stays in your own environment
- Add tools without changing agent harness
- Multiple agents share results in same collection
- Agents can create tools by automating repeated work
- Open source with Apache 2.0 license
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 37 ▲ +3 (up) since last check | Not checked yet ▼ −1 (down) since last check |
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| Trust Flow (Majestic) | 20 | 0 |
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| Citation Flow (Majestic) | 40 | 12 |
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| Referring domains (Majestic) | 593 | 21 |
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4 details filled in for both companies.
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