head to head · open source
Bruno vs schemathesis
Bruno has 47,992 GitHub stars, 3,068 forks, 1,831 open issues and last shipped yesterday. schemathesis has 3,738 stars, 231 forks, 7 open issues and last shipped yesterday. Bruno leads on adoption by 1,184% (47,992 vs 3,738 stars). Bruno is written in JavaScript under MIT; schemathesis is written in Python under MIT. Bruno has attracted 6% as many forks as stars, schemathesis 6%. schemathesis was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (api-testing, openapi), 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
| Bruno | schemathesis | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 3.7K |
| License | MIT | MIT |
| Written in | JavaScript | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.1K | ⑂ 231 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Bruno if
- You weight community size — 48K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick schemathesis if
- You want the schemathesis feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and schemathesis fits your workflow better
About Bruno
Bruno Opensource IDE for exploring and testing APIs. English Українська Русский Türkçe Deutsch Français Português (BR) 한국어 বাংলা Español Italiano Română Polski 简体中文 正體中文 العربية 日本語 ქართული Nederlands فارسی Bruno is a new and innovative API client, aimed at revolutionizing the status quo represented by Postman and similar tools out there. Bruno stores your collections directly in a folder on your filesystem. We use a plain text markup language, Bru, to save information about API requests. You can use Git or any version control of your choice to collaborate over your API collections. Bruno is offline only. There…
read the full Bruno overview →
About schemathesis
Schemathesis Catch API bugs before your users do. Schemathesis tests OpenAPI and GraphQL APIs by generating inputs from your schema, adapting to server responses, and chaining operations into realistic workflows. Finding bugs that manual testing missed Try it now What problems does it solve? 💥 500 errors that crash your API on edge case inputs 📋 Schema violations where your API returns different data than documented 🚪 Validation bypasses where invalid data gets accepted 🔗 Integration failures when responses don't match client expectations 🔄 Stateful bugs where operations work individually but fail in…
read the full schemathesis overview →
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Frequently asked questions
Is Bruno or schemathesis more popular?
Bruno has 47,992 GitHub stars and schemathesis has 3,738. Bruno has the larger community by that measure.
Are Bruno and schemathesis free?
Both are open source. Bruno is licensed under MIT and schemathesis under MIT. Neither carries a licence fee.
What is the difference between Bruno and schemathesis?
Bruno is written in JavaScript and schemathesis in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Bruno or schemathesis?
Choose Bruno if you want the larger community (47,992 stars) or its MIT licence terms. Choose schemathesis if its feature set, stack or MIT licence fits better. Both are self-hostable.