head to head · open source
ralph vs cmms
ralph has 2,531 GitHub stars, 593 forks, 124 open issues and last shipped yesterday. cmms has 853 stars, 250 forks, 34 open issues and last shipped 7 days ago. ralph leads on adoption by 197% (2,531 vs 853 stars). ralph is written in Python under Apache-2.0; cmms is written in TypeScript under AGPL-3.0. ralph has attracted 23% as many forks as stars, cmms 29%. ralph was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (inventory-management), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| ralph | cmms | |
|---|---|---|
| GitHub stars | ★ 2.5K | ★ 853 |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-10-27 |
| Forks | ⑂ 593 | ⑂ 250 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ralph if
- You weight community size — 2.5K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick cmms if
- You want the cmms feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and cmms fits your workflow better
About ralph
Ralph Update 2025/02 As Allegro, we continue to publish Ralph's source code and will maintain its development under a "Sources only" model, without guarantees. We believe this approach will be beneficial, allowing everyone to use and build upon the software. Our current goal is to modernize the software and ensure its long term maintainability, and we're investing into it in 2025. However, we are not operating under a contribution based model. While we welcome discussions, we do not guarantee responses to issues or support for pull requests. If you require commercial support, please visit We sincerely appreciate…
read the full ralph overview →
About cmms
Atlas CMMS Atlas CMMS is a powerful, self hosted maintenance management system designed for both web and mobile platforms using Docker. It simplifies and automates the management of maintenance activities, making it ideal for IT managers or developers looking to implement solutions that keep their organization's assets running smoothly. Think of it like Jira for technicians . Example industries Facilities Managers (buildings, property, real estate) Manufacturing/Production Teams (machinery and equipment) Healthcare Facilities (medical equipment maintenance) Hospitality Managers (hotels and resorts) Public Sector…
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Frequently asked questions
Is ralph or cmms more popular?
ralph has 2,531 GitHub stars and cmms has 853. ralph has the larger community by that measure.
Are ralph and cmms free?
Both are open source. ralph is licensed under Apache-2.0 and cmms under AGPL-3.0. Neither carries a licence fee.
What is the difference between ralph and cmms?
ralph is written in Python and cmms in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ralph or cmms?
Choose ralph if you want the larger community (2,531 stars) or its Apache-2.0 licence terms. Choose cmms if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.