head to head · open source
Hoppscotch vs Mockoon
Hoppscotch has 80,331 GitHub stars, 6,110 forks, 820 open issues and last shipped 2 days ago. Mockoon has 8,411 stars, 477 forks, 31 open issues and last shipped 2 days ago. Hoppscotch leads on adoption by 855% (80,331 vs 8,411 stars). Hoppscotch is written in TypeScript under MIT; Mockoon is written in TypeScript under MIT. Hoppscotch has attracted 8% as many forks as stars, Mockoon 6%. Mockoon was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api), 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 | Mockoon | |
|---|---|---|
| GitHub stars | ★ 80K | ★ 8.4K |
| License | MIT | MIT |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-16 | 2026-09-16 |
| Forks | ⑂ 6.1K | ⑂ 477 |
| 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 Mockoon if
- You want the Mockoon feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Mockoon 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 Mockoon
Mockoon is an open source API mocking tool written in TypeScript and released under the MIT license. It ships as a desktop application built with Electron for designing and running mock servers locally, alongside a command line interface and a serverless package for running the same mock APIs in headless and cloud function environments. The project lives in the JavaScript and TypeScript ecosystem, distributed through NPM as @mockoon/cli and @mockoon/serverless , and through native package managers on each desktop platform. No remote deployment and no account are required to run it.
read the full Mockoon overview →
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Frequently asked questions
Is Hoppscotch or Mockoon more popular?
Hoppscotch has 80,331 GitHub stars and Mockoon has 8,411. Hoppscotch has the larger community by that measure.
Are Hoppscotch and Mockoon free?
Both are open source. Hoppscotch is licensed under MIT and Mockoon under MIT. Neither carries a licence fee.
What is the difference between Hoppscotch and Mockoon?
Hoppscotch is written in TypeScript and Mockoon 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 Mockoon?
Choose Hoppscotch if you want the larger community (80,331 stars) or its MIT licence terms. Choose Mockoon if its feature set, stack or MIT licence fits better. Both are self-hostable.