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Umwelt vs Force

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

Umwelt compared with Force
DetailUmwelt logo Umwelt Force
What it doesAn epistemic state engine that tracks what each character knows, and how they learned it The code cockpit for AI coding agent sessions
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelOpen source Free
PricingAGPL-3.0-only open source license. Commercial license available for closed-source products, services and hosted APIs. Free Play Exception covers free games, mods, interactive fiction and tabletop tools (excluding games with price, in-game purchases, ads, paid content or early access). Not given
Key features
  • Tracks what each character knows and how they learned it
  • Prevents AI models from leaking story information or twists
  • Records confirmed history that is never deleted
  • Single portable .umw file for entire world state
  • Works across TypeScript, .NET, CLI and any language via JSON protocol
  • Query from any character's point of view at any moment in time
  • Performance of 55-65 microseconds per query with half a million holdings
  • Free Play Exception for non-commercial games and tabletop tools
  • Keeps sessions running through closed terminals and reboots
  • Aggregates multiple coding agent sessions in one terminal
  • Shows which sessions need attention
  • Access sessions from phone
  • Single command line installation
  • No configuration files required
  • Works with Claude Code and OpenCode
  • Linux x86-64 support
What makes it different
  • Separates world state from character knowledge to prevent narrative leakage
  • Guarantees written down with conformance testing across all clients
  • Idempotent writes ensure consistency across retries
  • Works without AI or can control what AI models are allowed to know
  • Open source with commercial licensing option for closed-source products
  • Persistent session management across terminal closures and reboots
  • Single unified terminal for all coding agents
  • Mobile access to coding sessions
  • Zero configuration installation
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 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)40
Citation Flow (Majestic)120
Referring domains (Majestic)10

4 details filled in for both companies.

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