head to head · open source
Bruno vs connexion
Bruno has 47,982 GitHub stars, 3,066 forks, 1,831 open issues and last shipped 2 days ago. connexion has 4,613 stars, 790 forks, 186 open issues and last shipped yesterday. Bruno leads on adoption by 940% (47,982 vs 4,613 stars). Bruno is written in JavaScript under MIT; connexion is written in Python under Apache-2.0. Bruno has attracted 6% as many forks as stars, connexion 17%. connexion was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (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 | connexion | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 4.6K |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | Python |
| Last push | 2026-11-01 | 2026-11-02 |
| Forks | ⑂ 3.1K | ⑂ 790 |
| 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 connexion if
- You want the connexion feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and connexion 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 connexion
Explore the docs » Connexion is a modern Python web framework that makes spec first and api first development easy. You describe your API in an [OpenAPI][OpenAPI] (or [Swagger][Swagger]) specification with as much detail as you want and Connexion will guarantee that it works as you specified. It works either standalone, or in combination with any ASGI or WSGI compatible framework! 📢 Connexion 3 was recently released! Read about the changes here » ✨ Features Connexion provides the following functionality based on your specification : 🚏 Automatic route registration , no @route decorators needed 🔒 Authentication…
read the full connexion overview →
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Frequently asked questions
Is Bruno or connexion more popular?
Bruno has 47,982 GitHub stars and connexion has 4,613. Bruno has the larger community by that measure.
Are Bruno and connexion free?
Both are open source. Bruno is licensed under MIT and connexion under Apache-2.0. Neither carries a licence fee.
What is the difference between Bruno and connexion?
Bruno is written in JavaScript and connexion 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 connexion?
Choose Bruno if you want the larger community (47,982 stars) or its MIT licence terms. Choose connexion if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.