head to head · open source
Hoppscotch vs oasdiff
Hoppscotch has 80,393 GitHub stars, 6,119 forks, 820 open issues and last shipped 4 days ago. oasdiff has 1,371 stars, 107 forks, 50 open issues and last shipped 2 days ago. Hoppscotch leads on adoption by 5,764% (80,393 vs 1,371 stars). Hoppscotch is written in TypeScript under MIT; oasdiff is written in Go under Apache-2.0. Hoppscotch has attracted 8% as many forks as stars, oasdiff 8%. oasdiff was the more recently maintained of the two, and both are self-hostable with no licence fee.
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 | oasdiff | |
|---|---|---|
| GitHub stars | ★ 80K | ★ 1.4K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Go |
| Last push | 2026-09-16 | 2026-09-18 |
| Forks | ⑂ 6.1K | ⑂ 107 |
| 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 oasdiff if
- You want the oasdiff feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and oasdiff 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 oasdiff
oasdiff is a Go based, Apache 2.0 command line tool that compares OpenAPI specifications and detects breaking changes, built for API engineers and platform teams who need to know whether a spec edit will break existing API clients before it ships.
read the full oasdiff overview →
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Frequently asked questions
Is Hoppscotch or oasdiff more popular?
Hoppscotch has 80,393 GitHub stars and oasdiff has 1,371. Hoppscotch has the larger community by that measure.
Are Hoppscotch and oasdiff free?
Both are open source. Hoppscotch is licensed under MIT and oasdiff under Apache-2.0. Neither carries a licence fee.
What is the difference between Hoppscotch and oasdiff?
Hoppscotch is written in TypeScript and oasdiff in Go. 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 oasdiff?
Choose Hoppscotch if you want the larger community (80,393 stars) or its MIT licence terms. Choose oasdiff if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.