Fat Free CRM
What Fat Free CRM is
Fat Free CRM is an open-source customer relationship management platform built with Ruby on Rails. Its free plan includes the Ruby on Rails CRM under the MIT license. Core tools cover group collaboration, campaign and lead management, contact lists, and opportunity tracking. Records include contacts, opportunities, accounts, and tasks, with custom fields, tags, and organizational groups or teams for organization. Plugins can add webhook handling and sending, record merging, time tracking, and other extensions. The software can run as a Rails Engine inside another Rails application, which the project recommends for deployments using plugins or customizations. The README recommends Ruby 3.1 or later and supports MySQL, SQLite, or PostgreSQL. Listed platforms include API, Linux, macOS, self-hosted, web, and Windows. The project welcomes pull requests and bug reports, while its MIT license provides the software without warranty.
Who it suits
Fat Free CRM suits users seeking a free, self-hosted, open-source CRM they can customize with Rails, fields, tags, and plugins. It fits teams comfortable managing Ruby and database requirements.
What it does well
- Free MIT-licensed open-source CRM
- Campaign and lead management
- Custom fields and tags
- Plugin extension support
- Multiple database options
What to know first
- Requires Ruby 3.1 or later
- Self-hosting and deployment work required
- MIT license provides no warranty
- No AI features
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Fat Free CRM | Open source · Ruby on Rails CRM | Free |
As fatfreecrm.com lists them, read 13 Oct 2026. The maker's own page has the final word.
Verdict
Fat Free CRM offers broad CRM records, collaboration, customization, and plugin support at no license cost. Its Rails deployment and system requirements make it better suited to technically managed installations.
Facts from Fat Free CRM's own pages
- AI features
- No · github.com, 22 Sept 2026
- Core features
- It includes group collaboration, campaign and lead management, contact lists, and opportunity tracking. · github.com, 13 Oct 2026
- Customization
- Users can add custom fields, organize records with tags, and model groups and teams. · github.com, 13 Oct 2026
- Data protection
- The MIT license states that the software is provided without warranty. · github.com, 12 Oct 2026
- Deployment
- The project provides setup guidance for Linux or Mac OS and Heroku, and marks its Microsoft Windows guide as deprecated. · github.com, 13 Oct 2026
- Extensions
- The project describes plugins for webhook handling and sending, merging records, and time tracking. · github.com, 13 Oct 2026
- Free plan
- Yes · github.com, 22 Sept 2026
- License
- The project says Fat Free CRM is released under the MIT license and is freely available for use. · github.com, 13 Oct 2026
- Open source
- Yes · github.com, 22 Sept 2026
- Platforms
- The project links setup guides for Linux or Mac OS and Microsoft Windows, with the Windows guide marked deprecated. · github.com, 12 Oct 2026
- Product
- Fat Free CRM is an open-source customer relationship management platform built with Ruby on Rails. · github.com, 13 Oct 2026
- Records
- The project lists contacts, opportunities, accounts, and tasks as core CRM records. · github.com, 13 Oct 2026
- Requirements
- The project recommends Ruby 3.1 or later and supports MySQL, SQLite, or PostgreSQL databases. · github.com, 12 Oct 2026
- Security announcements
- The security policy says advisories are announced in the Fat Free CRM users Google group. · github.com, 13 Oct 2026
- Security reporting
- The security policy asks users to report vulnerabilities to [email protected] and requests that they not disclose issues publicly before resolution and release. · github.com, 13 Oct 2026
- Support
- The project welcomes pull requests and bug reports and links to its GitHub issues page for feature requests and bugs. · github.com, 13 Oct 2026
- System requirements
- The README recommends Ruby 3.1 or later and lists MySQL, SQLite, or PostgreSQL as database options. · github.com, 13 Oct 2026
Where Fat Free CRM stands on Freedom251
- CRM Software#16 of 244