head to head · open source
Hoppscotch vs serenity-js
Hoppscotch has 80,331 GitHub stars, 6,110 forks, 820 open issues and last shipped 2 days ago. serenity-js has 616 stars, 152 forks, 88 open issues and last shipped yesterday. Hoppscotch leads on adoption by 12,941% (80,331 vs 616 stars). Hoppscotch is written in TypeScript under MIT; serenity-js is written in TypeScript under Apache-2.0. Hoppscotch has attracted 8% as many forks as stars, serenity-js 25%. serenity-js 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
| Hoppscotch | serenity-js | |
|---|---|---|
| GitHub stars | ★ 80K | ★ 616 |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-16 | 2026-09-17 |
| Forks | ⑂ 6.1K | ⑂ 152 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hoppscotch if
- You weight community size — 80K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- 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 Hoppscotch
Hoppscotch is an open source API development ecosystem that provides a full featured client for designing, testing, and documenting APIs. It operates as a web based application, desktop app, and CLI tool, supporting offline, on premises, and cloud deployments. Built with TypeScript and licensed under MIT, it serves as a direct open source alternative to proprietary tools like Postman and Insomnia.
read the full Hoppscotch overview →
About serenity-js
Serenity/JS is a TypeScript native acceptance testing framework that gives an existing Playwright Test, WebdriverIO, or Cucumber suite the Screenplay Pattern's architecture, and it is built for test automation teams whose end to end and API suites have outgrown duplicated selectors, unreadable reports, and tool lock in.
read the full serenity-js overview →
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Frequently asked questions
Is Hoppscotch or serenity-js more popular?
Hoppscotch has 80,331 GitHub stars and serenity-js has 616. Hoppscotch has the larger community by that measure.
Are Hoppscotch and serenity-js free?
Both are open source. Hoppscotch is licensed under MIT and serenity-js under Apache-2.0. Neither carries a licence fee.
What is the difference between Hoppscotch and serenity-js?
Hoppscotch is written in TypeScript 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, Hoppscotch or serenity-js?
Choose Hoppscotch if you want the larger community (80,331 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.