head to head · open source
ralph vs OpenConstructionERP
ralph has 2,531 GitHub stars, 593 forks, 124 open issues and last shipped yesterday. OpenConstructionERP has 1,125 stars, 367 forks, 2 open issues and last shipped yesterday. ralph leads on adoption by 125% (2,531 vs 1,125 stars). ralph is written in Python under Apache-2.0; OpenConstructionERP is written in TypeScript under AGPL-3.0. ralph has attracted 23% as many forks as stars, OpenConstructionERP 33%. OpenConstructionERP 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 | OpenConstructionERP | |
|---|---|---|
| GitHub stars | ★ 2.5K | ★ 1.1K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 593 | ⑂ 367 |
| 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 OpenConstructionERP if
- You want the OpenConstructionERP 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 OpenConstructionERP 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 OpenConstructionERP
OpenConstructionERP A leading open source workspace for construction project management Professional BOQ, CAD and BIM takeoff, 4D scheduling, 5D cost model, and tendering all in one self hosted platform. Like WordPress for construction companies pick modules from the marketplace, drop in your own, or replace ours with custom built ones. Same plug and play model, but for BOQ, scheduling, cost control, BIM, and tendering. A platform companies build any construction app on. Use OpenConstructionERP as the base to assemble the exact software a project needs and to build your own modules on top, from estimating and…
read the full OpenConstructionERP overview →
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Frequently asked questions
Is ralph or OpenConstructionERP more popular?
ralph has 2,531 GitHub stars and OpenConstructionERP has 1,125. ralph has the larger community by that measure.
Are ralph and OpenConstructionERP free?
Both are open source. ralph is licensed under Apache-2.0 and OpenConstructionERP under AGPL-3.0. Neither carries a licence fee.
What is the difference between ralph and OpenConstructionERP?
ralph is written in Python and OpenConstructionERP 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 OpenConstructionERP?
Choose ralph if you want the larger community (2,531 stars) or its Apache-2.0 licence terms. Choose OpenConstructionERP if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.