Monica vs Fat Free CRM
A side-by-side comparison of two self-hosted crm & business apps options — licensing, setup difficulty, resource needs, and what each one replaces.
Monica
Personal CRM to remember the people you know
VS
Fat Free CRM
Ruby on Rails open-source customer relationship manager
| Feature | Monica | Fat Free CRM |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 66 · Good | 86 · Excellent |
| Category | CRM & Business Apps | CRM & Business Apps |
| License | AGPL-3.0 | MIT |
| Language | PHP | Ruby |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | docker, bare-metal | docker, bare-metal |
| GitHub stars | ★ 25,354 | ★ 3,632 |
| First released | 2017 | 2008 |
| Replaces | Salesforce, HubSpot | Salesforce |
What are Monica and Fat Free CRM?
Monica
Monica is a personal CRM that helps you record and remember details about friends, family, and personal contacts. It targets individuals who want to nurture personal relationships. It is deployed via Docker or a PHP stack.
- Tracks personal relationships
- Reminders for important dates
- Notes, gifts and activities
- Contact journaling
Fat Free CRM
Fat Free CRM is an open-source, Ruby on Rails based customer relationship management platform. It offers group collaboration, campaign and lead management, contact lists, and an opportunity pipeline out of the box.
- Lead and campaign management
- Contact and account lists
- Opportunity pipeline
- Group collaboration
Monica vs Fat Free CRM: key differences
Monica is written in PHP, while Fat Free CRM is built with Ruby. Licensing differs — AGPL-3.0 for Monica versus MIT for Fat Free CRM. Monica is the lighter option, starting around 512 MB of RAM against 1,024 MB for Fat Free CRM. Fat Free CRM is the more established project (first released 2008), while Monica arrived in 2017. Monica has the considerably larger community, at 25,354 GitHub stars versus 3,632.
Why pick each one
Choose Monica if…
- Unique personal CRM focus
- Helps maintain relationships
- Open source
Watch out for
- Not for business sales
- Development pace varies
Choose Fat Free CRM if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Active community (3.6k GitHub stars)
- Written in Ruby
Watch out for
- Dated interface
- Slower development
Frequently asked questions
Is Monica or Fat Free CRM better?
Neither is universally better. Monica has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Monica and Fat Free CRM free and open-source?
Yes. Monica is licensed under AGPL-3.0 and Fat Free CRM under MIT. Both can be self-hosted at no software cost.
Can I run Monica and Fat Free CRM with Docker?
Monica: yes. Fat Free CRM: yes.
Which is lighter on resources, Monica or Fat Free CRM?
Monica has the smaller minimum footprint at 512 MB of RAM, compared to about 1,024 MB for Fat Free CRM. Real-world usage depends on library size, user count, and enabled features.