head to head · open source
Bruno vs serenity-js
Bruno has 47,992 GitHub stars, 3,068 forks, 1,831 open issues and last shipped yesterday. serenity-js has 621 stars, 153 forks, 88 open issues and last shipped 4 days ago. Bruno leads on adoption by 7,628% (47,992 vs 621 stars). Bruno is written in JavaScript under MIT; serenity-js is written in TypeScript under Apache-2.0. Bruno has attracted 6% as many forks as stars, serenity-js 25%. Bruno was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api-testing), 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 | serenity-js | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 621 |
| License | MIT | Apache-2.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-11-02 | 2026-10-30 |
| Forks | ⑂ 3.1K | ⑂ 153 |
| 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 serenity-js if
- You want the serenity-js feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and serenity-js 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 serenity-js
Serenity/JS A TypeScript native test automation framework that gives your Playwright Test, WebdriverIO, or Cucumber test suite the architecture it needs to scale. Website · Getting Started · Handbook · API Docs · Community What a Serenity/JS test looks like Tests read like specifications. Each Task ( Authenticate , Inventory , Checkout ) is reusable across scenarios, test runners, and integration tools. See the full implementation → Note: The username and password above are public demo values from saucedemo.com. In real projects, use environment variables or a secrets manager. Why Serenity/JS? → See the same…
read the full serenity-js overview →
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Frequently asked questions
Is Bruno or serenity-js more popular?
Bruno has 47,992 GitHub stars and serenity-js has 621. Bruno has the larger community by that measure.
Are Bruno and serenity-js free?
Both are open source. Bruno is licensed under MIT and serenity-js under Apache-2.0. Neither carries a licence fee.
What is the difference between Bruno and serenity-js?
Bruno is written in JavaScript and serenity-js 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, Bruno or serenity-js?
Choose Bruno if you want the larger community (47,992 stars) or its MIT licence terms. Choose serenity-js if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.