head to head · open source
Hoppscotch vs pythagora
Hoppscotch has 80,331 GitHub stars, 6,110 forks, 820 open issues and last shipped 2 days ago. pythagora has 1,823 stars, 116 forks, 24 open issues and last shipped 3 months ago. Hoppscotch leads on adoption by 4,307% (80,331 vs 1,823 stars). Hoppscotch is written in TypeScript under MIT; pythagora is written in JavaScript under Apache-2.0. Hoppscotch has attracted 8% as many forks as stars, pythagora 6%. Hoppscotch 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, developer-tools), 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 | pythagora | |
|---|---|---|
| GitHub stars | ★ 80K | ★ 1.8K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | JavaScript |
| Last push | 2026-09-16 | 2026-06-16 |
| Forks | ⑂ 6.1K | ⑂ 116 |
| 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 pythagora if
- You want the pythagora feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and pythagora 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 pythagora
Pythagora is a JavaScript tool for generating automated tests for Node.js applications with GPT 4. It lives in the Node.js testing ecosystem and aims to create unit tests without developers writing the test code by hand. The project works by finding an exported function, collecting related functions through AST parsing, and sending that context to a server that produces the tests. The README also says the repository is deprecated and that work has moved to GPT Pilot.
read the full pythagora overview →
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Frequently asked questions
Is Hoppscotch or pythagora more popular?
Hoppscotch has 80,331 GitHub stars and pythagora has 1,823. Hoppscotch has the larger community by that measure.
Are Hoppscotch and pythagora free?
Both are open source. Hoppscotch is licensed under MIT and pythagora under Apache-2.0. Neither carries a licence fee.
What is the difference between Hoppscotch and pythagora?
Hoppscotch is written in TypeScript and pythagora in JavaScript. 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 pythagora?
Choose Hoppscotch if you want the larger community (80,331 stars) or its MIT licence terms. Choose pythagora if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.