head to head · open source
Hoppscotch vs OpenAPI-Specification
Hoppscotch has 80,724 GitHub stars, 6,225 forks, 820 open issues and last shipped 3 days ago. OpenAPI-Specification has 31,291 stars, 9,145 forks, 80 open issues and last shipped 12 days ago. Hoppscotch leads on adoption by 158% (80,724 vs 31,291 stars). Hoppscotch is written in TypeScript under MIT; OpenAPI-Specification is written in Markdown under Apache-2.0. Hoppscotch has attracted 8% as many forks as stars, OpenAPI-Specification 29%. Hoppscotch was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (rest), 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 | OpenAPI-Specification | |
|---|---|---|
| GitHub stars | ★ 81K | ★ 31K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Markdown |
| Last push | 2026-10-31 | 2026-10-22 |
| Forks | ⑂ 6.2K | ⑂ 9.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Hoppscotch if
- You weight community size — 81K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick OpenAPI-Specification if
- You want the OpenAPI-Specification feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Markdown
- You evaluated both and OpenAPI-Specification fits your workflow better
About Hoppscotch
Hoppscotch Open Source API Development Ecosystem Built with ❤︎ by contributors We highly recommend you take a look at the Hoppscotch Documentation to learn more about the app. Support Features ❤️ Lightweight: Crafted with minimalistic UI design. ⚡️ Fast: Send requests and get responses in real time. 🗄️ HTTP Methods: Request methods define the type of action you are requesting to be performed. GET Requests retrieve resource information POST The server creates a new entry in a database PUT Updates an existing resource PATCH Very similar to PUT but makes a partial update on a resource DELETE Deletes resource or…
read the full Hoppscotch overview →
About OpenAPI-Specification
The OpenAPI Specification The OpenAPI Specification is a community driven open specification within the OpenAPI Initiative, a Linux Foundation Collaborative Project. The OpenAPI Specification (OAS) defines a standard, programming language agnostic interface description for HTTP APIs. This allows both humans and computers to discover and understand the capabilities of a service without requiring access to source code, additional documentation, or inspection of network traffic. When properly defined via OpenAPI, a consumer can understand and interact with the remote service with a minimal amount of implementation…
read the full OpenAPI-Specification overview →
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Frequently asked questions
Is Hoppscotch or OpenAPI-Specification more popular?
Hoppscotch has 80,724 GitHub stars and OpenAPI-Specification has 31,291. Hoppscotch has the larger community by that measure.
Are Hoppscotch and OpenAPI-Specification free?
Both are open source. Hoppscotch is licensed under MIT and OpenAPI-Specification under Apache-2.0. Neither carries a licence fee.
What is the difference between Hoppscotch and OpenAPI-Specification?
Hoppscotch is written in TypeScript and OpenAPI-Specification in Markdown. 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 OpenAPI-Specification?
Choose Hoppscotch if you want the larger community (80,724 stars) or its MIT licence terms. Choose OpenAPI-Specification if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.