head to head · open source
Insomnia vs WireMock.Net
Insomnia has 40,111 GitHub stars, 2,388 forks, 874 open issues and last shipped yesterday. WireMock.Net has 1,682 stars, 239 forks, 21 open issues and last shipped 2 days ago. Insomnia leads on adoption by 2,285% (40,111 vs 1,682 stars). Insomnia is written in TypeScript under Apache-2.0; WireMock.Net is written in C# under Apache-2.0. Insomnia has attracted 6% as many forks as stars, WireMock.Net 14%. 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.
← all 20902 open source comparisons
Side by side
| Insomnia | WireMock.Net | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 1.7K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | TypeScript | C# |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 2.4K | ⑂ 239 |
| 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 WireMock.Net if
- You want the WireMock.Net feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C#
- You evaluated both and WireMock.Net 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 WireMock.Net
WireMock.Net A C .NET version based on mock4net which mimics functionality from the original Java based WireMock. :books: Full documentation can now be found at wiremock.org :star: Key Features HTTP response stubbing, matchable on URL/Path, headers, cookies and body content patterns Library can be used in unit tests and integration tests Runs as a standalone process, as windows service, as Azure/IIS or as docker Configurable via a fluent C .NET API, JSON files and JSON over HTTP Record/playback of stubs (proxying) Per request conditional proxying Stateful behaviour simulation Response templating / transformation…
read the full WireMock.Net overview →
More in Developer Tools
Related comparisons
More API Development & Testing projects
Compare either of these against the rest of the API Development & Testing field.
Frequently asked questions
Is Insomnia or WireMock.Net more popular?
Insomnia has 40,111 GitHub stars and WireMock.Net has 1,682. Insomnia has the larger community by that measure.
Are Insomnia and WireMock.Net free?
Both are open source. Insomnia is licensed under Apache-2.0 and WireMock.Net under Apache-2.0. Neither carries a licence fee.
What is the difference between Insomnia and WireMock.Net?
Insomnia is written in TypeScript and WireMock.Net 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 WireMock.Net?
Choose Insomnia if you want the larger community (40,111 stars) or its Apache-2.0 licence terms. Choose WireMock.Net if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.