head to head · open source
Insomnia vs httpmock
Insomnia has 40,111 GitHub stars, 2,388 forks, 874 open issues and last shipped yesterday. httpmock has 675 stars, 60 forks, 37 open issues and last shipped yesterday. Insomnia leads on adoption by 5,842% (40,111 vs 675 stars). Insomnia is written in TypeScript under Apache-2.0; httpmock is written in Rust under MIT. Insomnia has attracted 6% as many forks as stars, httpmock 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 | httpmock | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 675 |
| License | Apache-2.0 | MIT |
| Written in | TypeScript | Rust |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.4K | ⑂ 60 |
| 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 httpmock if
- You want the httpmock feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and httpmock 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 httpmock
Simple yet powerful HTTP mocking library for Rust Website · API Reference · Crate · Chat on Discord · Report Bug · Request Feature · Support this Project Features Mocks responses from HTTP services Simple, expressive, fluent API. Many built in helpers for easy request matching (Regex, JSON, serde, cookies, and more). Record and Playback third party services Forward and Proxy Mode HTTPS support Fault and network delay simulation. Custom request matchers. Standalone mode with an accompanying Docker image. Helpful error messages Advanced verification and debugging support (including diff generation between actual…
read the full httpmock overview →
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Frequently asked questions
Is Insomnia or httpmock more popular?
Insomnia has 40,111 GitHub stars and httpmock has 675. Insomnia has the larger community by that measure.
Are Insomnia and httpmock free?
Both are open source. Insomnia is licensed under Apache-2.0 and httpmock under MIT. Neither carries a licence fee.
What is the difference between Insomnia and httpmock?
Insomnia is written in TypeScript and httpmock in Rust. 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 httpmock?
Choose Insomnia if you want the larger community (40,111 stars) or its Apache-2.0 licence terms. Choose httpmock if its feature set, stack or MIT licence fits better. Both are self-hostable.