head to head · open source
ralph vs Open Mercato
ralph has 2,531 GitHub stars, 593 forks, 124 open issues and last shipped yesterday. Open Mercato has 1,896 stars, 480 forks, 1,119 open issues and last shipped yesterday. ralph leads on adoption by 33% (2,531 vs 1,896 stars). ralph is written in Python under Apache-2.0; Open Mercato is written in TypeScript under MIT. ralph has attracted 23% as many forks as stars, Open Mercato 25%. Open Mercato 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.
← all 20902 open source comparisons
Side by side
| ralph | Open Mercato | |
|---|---|---|
| GitHub stars | ★ 2.5K | ★ 1.9K |
| License | Apache-2.0 | MIT |
| Written in | Python | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 593 | ⑂ 480 |
| 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 Open Mercato if
- You want the Open Mercato feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Open Mercato 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 Open Mercato
Open Mercato Open Mercato the AI Engineering Foundation Framework. AI code assistants generate code. They don't decide where it goes, how it should be layered, or whether it stays consistent across 30 or 50 engineers in the team. Open Mercato is the open source foundation framework that solves it: Architecture aware AI harness agents know where in the project to place code, not just how to write it, they are provided with autonomous skills for everything from adding data table, Design System coherent forms to implementing whole features with unit and integration tests, Spec first development specs ship with the…
read the full Open Mercato overview →
More in Business Software
Related comparisons
More ERP & Operations projects
Compare either of these against the rest of the ERP & Operations field.
Frequently asked questions
Is ralph or Open Mercato more popular?
ralph has 2,531 GitHub stars and Open Mercato has 1,896. ralph has the larger community by that measure.
Are ralph and Open Mercato free?
Both are open source. ralph is licensed under Apache-2.0 and Open Mercato under MIT. Neither carries a licence fee.
What is the difference between ralph and Open Mercato?
ralph is written in Python and Open Mercato 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 Open Mercato?
Choose ralph if you want the larger community (2,531 stars) or its Apache-2.0 licence terms. Choose Open Mercato if its feature set, stack or MIT licence fits better. Both are self-hostable.