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Rhyven vs fractal

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Rhyven compared with fractal
DetailRhyven logo Rhyven fractal
What it doesMarketplace and runtime for headless, agent-first apps Long-term memory for AI agents that organizes itself and corrects itself
StageNot given MVP
FoundedNot given Not given
Based inNot given SE
Pricing modelOpen source Free
PricingNot given Personal: Free during early access. Unlimited memories, all agents with separate memories, no card required. Enterprise: On request, set up by the team for departmental organization with cross-department sharing and direct support.
Key features
  • 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
  • Self-correcting memory that updates when facts change
  • Historical memory queries with time-based retrieval
  • Automatic topic organization and hierarchy
  • Separate memory for each agent with controlled sharing
  • Multi-agent support via MCP, REST API, or LangGraph
  • AES-256 encryption at rest and in backups
  • OAuth 2.1 authentication and API key management
  • Data export and deletion capabilities
  • 37 MCP tools with automated verification on every code change
What makes it different
  • 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
  • Understands what changed, when it was true, and where it belongs - beyond vector database similarity
  • Never contradicts itself by automatically replacing outdated facts
  • Fully GDPR aligned with built-in privacy by design
  • Two-minute integration with Claude, ChatGPT, Cursor and any MCP client
  • Data stays in Europe on AWS eu-north-1 and never used for model training
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)120
Referring domains (Majestic)210

4 details filled in for both companies.

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