Monica vs Open QuarterMaster
A side-by-side comparison of two self-hosted crm & business apps options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Monica
Personal CRM to remember the people you know
VS
Open QuarterMaster
Powerful inventory management system, designed to be flexible and
| Feature | Monica | Open QuarterMaster |
|---|---|---|
| Category | CRM & Business Apps | CRM & Business Apps |
| License | AGPL-3.0 | GPL-3.0 |
| Language | PHP | Java |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 512 MB |
| Deployment | docker, bare-metal | docker |
| GitHub stars | ★ 24,983 | ★ 73 |
| First released | 2017 | 2026 |
| Replaces | Salesforce, HubSpot | — |
Why pick each one
Choose Open QuarterMaster if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Written in Java
- Lightweight — runs in 512 MB RAM
Frequently asked questions
Is Monica or Open QuarterMaster 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 Open QuarterMaster free and open-source?
Yes. Monica is licensed under AGPL-3.0 and Open QuarterMaster under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Monica and Open QuarterMaster with Docker?
Monica: yes. Open QuarterMaster: yes.