head to head · open source
Insomnia vs concord
Insomnia has 40,111 GitHub stars, 2,388 forks, 874 open issues and last shipped yesterday. concord has 660 stars, 44 forks, 18 open issues and last shipped 3 months ago. Insomnia leads on adoption by 5,977% (40,111 vs 660 stars). Insomnia is written in TypeScript under Apache-2.0; concord is written in C under MIT. Insomnia has attracted 6% as many forks as stars, concord 7%. Insomnia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (api-client, websockets), 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
| Insomnia | concord | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 660 |
| License | Apache-2.0 | MIT |
| Written in | TypeScript | C |
| Last push | 2026-11-02 | 2026-08-11 |
| Forks | ⑂ 2.4K | ⑂ 44 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Insomnia if
- You weight community size — 40K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick concord if
- You want the concord feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C
- You evaluated both and concord fits your workflow better
About Insomnia
Insomnia API Client Insomnia is an open source, cross platform API client for GraphQL, REST, WebSockets, Server Sent Events (SSE), gRPC and any other HTTP compatible protocol. With Insomnia you can: Debug APIs using the most popular protocols and formats. Design APIs using the native OpenAPI editor and visual preview. Test APIs using native test suites and collection runner. Mock APIs using a cloud or self hosted mocking server. Build CI/CD pipelines using the native Insomnia CLI for linting and testing. Collaborate with others using the many collaboration features. And more including the ability to use 3rd…
read the full Insomnia overview →
About concord
[migrating shield]: [migrating link]: [migrating orca link]: [discord shield]: [discord invite]: [discord config init]: [discord config get field]: Concord C Discord API library [ ![discord shield][] ][discord invite] [ ![migrating shield][] ][migrating link] 🚨 Concord is not dead! 🚨 Development has been happening in the dev branch. We are working on new features and improvements. To access the latest version of the library, please check out the dev branch. About Concord is an asynchronous C99 Discord API library with minimal external dependencies, and a low level translation of the Discord official…
read the full concord overview →
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Frequently asked questions
Is Insomnia or concord more popular?
Insomnia has 40,111 GitHub stars and concord has 660. Insomnia has the larger community by that measure.
Are Insomnia and concord free?
Both are open source. Insomnia is licensed under Apache-2.0 and concord under MIT. Neither carries a licence fee.
What is the difference between Insomnia and concord?
Insomnia is written in TypeScript and concord in C. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Insomnia or concord?
Choose Insomnia if you want the larger community (40,111 stars) or its Apache-2.0 licence terms. Choose concord if its feature set, stack or MIT licence fits better. Both are self-hostable.