head to head · open source
ralph vs rebuild
ralph has 2,516 GitHub stars, 593 forks, 124 open issues and last shipped 8 days ago. rebuild has 1,069 stars, 257 forks, 10 open issues and last shipped yesterday. ralph leads on adoption by 135% (2,516 vs 1,069 stars). ralph is written in Python under Apache-2.0; rebuild is written in Java under GPL-3.0. ralph has attracted 24% as many forks as stars, rebuild 24%. rebuild was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | rebuild | |
|---|---|---|
| GitHub stars | ★ 2.5K | ★ 1.1K |
| License | Apache-2.0 | GPL-3.0 |
| Written in | Python | Java |
| Last push | 2026-09-10 | 2026-09-17 |
| Forks | ⑂ 593 | ⑂ 257 |
| 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 rebuild if
- You want the rebuild feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Java
- You evaluated both and rebuild fits your workflow better
About ralph
Ralph is an open source asset management, DCIM, and CMDB system written in Python and built with Django. It is intended for organizations that need to manage data center hardware and back office hardware in one place under the Apache 2.0 license. The project lives in the business software and operations ecosystem.
read the full ralph overview →
About rebuild
REBUILD is a highly configurable, open source enterprise management system written in Java and licensed under GPL 3.0, built for enterprise IT teams, small and medium businesses, business managers and developers who need to assemble systems such as CRM, WMS, MES, HRM, TMS or ERP through zero code and low code configuration.
read the full rebuild overview →
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Frequently asked questions
Is ralph or rebuild more popular?
ralph has 2,516 GitHub stars and rebuild has 1,069. ralph has the larger community by that measure.
Are ralph and rebuild free?
Both are open source. ralph is licensed under Apache-2.0 and rebuild under GPL-3.0. Neither carries a licence fee.
What is the difference between ralph and rebuild?
ralph is written in Python and rebuild in Java. 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 rebuild?
Choose ralph if you want the larger community (2,516 stars) or its Apache-2.0 licence terms. Choose rebuild if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.