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Viaduct vs Taskless

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

Viaduct compared with Taskless
DetailViaduct logo ViaductTaskless logo Taskless
What it doesFree C4 modeling tool with an MCP server for software teams to share architecture context with AI development tools Rules for Agents
StageNot given Not given
FoundedNot given Not given
Based inLT US
Pricing modelFreemium Freemium
PricingBrowser: Free with account. Desktop: €10 a month after 7-day free trial, one licence covers 3 machines. Enterprise: custom pricing. Free CLI (open source, MIT licensed, no account required). Taskless Cloud is free for individual developers and small teams with usage caps.
Key features
  • System context, container, component, and code diagrams
  • Live collaboration on models
  • MCP server for AI coding agents
  • Change sets for scoped agent work
  • Organization SSO
  • JSON import and export
  • OpenAPI contract export
  • Desktop app for macOS, Windows, Linux
  • AI assistant for model descriptions
  • Installable PWA
  • Deterministic rules that produce consistent results across runs
  • Rules with built-in pass/fail fixtures for verification
  • Support for 25+ languages
  • Automatic detection of Claude Code, Cursor, and OpenCode
  • GitHub integration and runtime rules in Cloud
  • Rule provenance tracking to PR decisions
What makes it different
  • Model elements exist once and appear on every level they belong to
  • Endpoints are real OpenAPI documents, not diagram labels
  • Desktop app keeps all data local and offline-capable
  • Free browser version with no paywall or feature limits
  • AI agents read and write architecture through MCP
  • Unlike AGENTS.md and Cursor Rules, Taskless creates analyzed rules rather than interpreted prompts
  • Rules learn from your team's actual corrections, not generic training data
  • No maintenance required; corrections automatically become rules
  • Runs in background like any CI step with no workflow changes needed
Community votes00
DR (Domain Rating by Ahrefs)20 no change since last check22 no change since last check
Trust Flow (Majestic)105
Citation Flow (Majestic)2823
Referring domains (Majestic)7415

6 details filled in for both companies.

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