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Attio vs Fat Free CRM: 2026 Comparison

Attio Fat Free CRM
Overview A next-generation CRM that automatically builds itself from your data with powerful customization and real-time collaboration. A lightweight open-source Ruby on Rails CRM application designed for small teams who want a simple self-hosted solution.
Pricing Freemium (Free-$79/user/month) Freemium (Free (open source))
Key Features
  • Automatic data sync
  • Custom objects
  • Real-time collaboration
  • Email integration
  • Reporting
  • Workflow automation
  • Enrichment
  • API-first design
  • Contact management
  • Lead tracking
  • Opportunity management
  • Campaign tracking
  • Task management
  • User management
  • Custom fields
  • Tagging
Pros
  • Modern and flexible architecture
  • Excellent data model
  • Real-time multiplayer
  • Beautiful design
  • Free and lightweight
  • Simple to use
  • Ruby on Rails based
  • Clean interface
Cons
  • Still maturing feature set
  • Smaller integration library
  • Limited marketing tools
  • Newer with less track record
  • No longer actively maintained
  • Very basic features
  • Small community
  • Limited integrations