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15Five vs Fat Free CRM: 2026 Comparison

15Five Fat Free CRM
Overview A performance management platform with continuous feedback, OKRs, engagement surveys, and manager effectiveness tools. A lightweight open-source Ruby on Rails CRM application designed for small teams who want a simple self-hosted solution.
Pricing Subscription ($4-$14/user/month) Freemium (Free (open source))
Key Features
  • Weekly check-ins
  • OKRs
  • Engagement surveys
  • Performance reviews
  • 1-on-1s
  • High fives recognition
  • Career development
  • Analytics
  • Contact management
  • Lead tracking
  • Opportunity management
  • Campaign tracking
  • Task management
  • User management
  • Custom fields
  • Tagging
Pros
  • Continuous feedback model
  • Easy to use
  • Good engagement tools
  • Manager enablement
  • Free and lightweight
  • Simple to use
  • Ruby on Rails based
  • Clean interface
Cons
  • Limited HRIS features
  • Can feel redundant with other tools
  • Basic reporting
  • Feature overlap with others
  • No longer actively maintained
  • Very basic features
  • Small community
  • Limited integrations

15Five

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Fat Free CRM

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