head to head · open source
Insomnia vs Voiden
Insomnia has 40,021 GitHub stars, 2,365 forks, 874 open issues and last shipped yesterday. Voiden has 1,755 stars, 80 forks, 38 open issues and last shipped 7 days ago. Insomnia leads on adoption by 2,180% (40,021 vs 1,755 stars). Insomnia is written in TypeScript under Apache-2.0; Voiden is written in TypeScript under Apache-2.0. Insomnia has attracted 6% as many forks as stars, Voiden 5%. Insomnia was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (api-client, graphql, http-client), 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 | Voiden | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 1.8K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | TypeScript | TypeScript |
| Last push | 2026-09-17 | 2026-09-11 |
| Forks | ⑂ 2.4K | ⑂ 80 |
| 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 Voiden if
- You want the Voiden feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and Voiden fits your workflow better
About Insomnia
Insomnia is an open source, cross platform API client built with Electron and TypeScript for developing and testing APIs across multiple protocols including REST, GraphQL, WebSockets, SSE, and gRPC. It runs on macOS, Windows, and Linux and is distributed under the Apache 2.0 license. The project serves as a direct open source alternative to Postman, offering similar core functionality without vendor lock in or mandatory cloud usage.
read the full Insomnia overview →
About Voiden
Voiden is an offline, Git native API workspace built with Electron, TypeScript, and JavaScript. It lets developers, QA engineers, and technical writers design, test, document, and collaborate on APIs using plain text .void files. The project lives in the API development and testing ecosystem, and its topics describe it as an alternative to Bruno and Insomnia. It supports REST, GraphQL, gRPC, and WebSockets through plugins, and it imports collections from Postman, Insomnia, and Swagger or OpenAPI.
read the full Voiden overview →
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Frequently asked questions
Is Insomnia or Voiden more popular?
Insomnia has 40,021 GitHub stars and Voiden has 1,755. Insomnia has the larger community by that measure.
Are Insomnia and Voiden free?
Both are open source. Insomnia is licensed under Apache-2.0 and Voiden under Apache-2.0. Neither carries a licence fee.
What is the difference between Insomnia and Voiden?
Insomnia is written in TypeScript and Voiden 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, Insomnia or Voiden?
Choose Insomnia if you want the larger community (40,021 stars) or its Apache-2.0 licence terms. Choose Voiden if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.