head to head · open source
Insomnia vs swift-openapi-generator
Insomnia has 40,022 GitHub stars, 2,366 forks, 874 open issues and last shipped yesterday. swift-openapi-generator has 1,971 stars, 182 forks, 132 open issues and last shipped 18 days ago. Insomnia leads on adoption by 1,931% (40,022 vs 1,971 stars). Insomnia is written in TypeScript under Apache-2.0; swift-openapi-generator is written in Swift under Apache-2.0. Insomnia has attracted 6% as many forks as stars, swift-openapi-generator 9%. Insomnia 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
| Insomnia | swift-openapi-generator | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 2.0K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | TypeScript | Swift |
| Last push | 2026-09-18 | 2026-09-01 |
| Forks | ⑂ 2.4K | ⑂ 182 |
| 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 swift-openapi-generator if
- You want the swift-openapi-generator feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Swift
- You evaluated both and swift-openapi-generator 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 swift-openapi-generator
Swift OpenAPI Generator is an Apache 2.0 licensed Swift package plugin and command line tool from Apple that reads an OpenAPI document written in YAML or JSON and generates the type safe Swift client and server code needed to make HTTP calls or implement HTTP services, and it is aimed at Swift developers building API clients for Apple platforms and at server side Swift developers implementing HTTP APIs. It is an SSWG incubating project.
read the full swift-openapi-generator overview →
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Frequently asked questions
Is Insomnia or swift-openapi-generator more popular?
Insomnia has 40,022 GitHub stars and swift-openapi-generator has 1,971. Insomnia has the larger community by that measure.
Are Insomnia and swift-openapi-generator free?
Both are open source. Insomnia is licensed under Apache-2.0 and swift-openapi-generator under Apache-2.0. Neither carries a licence fee.
What is the difference between Insomnia and swift-openapi-generator?
Insomnia is written in TypeScript and swift-openapi-generator in Swift. 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 swift-openapi-generator?
Choose Insomnia if you want the larger community (40,022 stars) or its Apache-2.0 licence terms. Choose swift-openapi-generator if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.