head to head · open source
Insomnia vs WebApiClient
Insomnia has 40,111 GitHub stars, 2,388 forks, 874 open issues and last shipped yesterday. WebApiClient has 2,136 stars, 445 forks, 14 open issues and last shipped 4 months ago. Insomnia leads on adoption by 1,778% (40,111 vs 2,136 stars). Insomnia is written in TypeScript under Apache-2.0; WebApiClient is written in C# under MIT. Insomnia has attracted 6% as many forks as stars, WebApiClient 21%. 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 | WebApiClient | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 2.1K |
| License | Apache-2.0 | MIT |
| Written in | TypeScript | C# |
| Last push | 2026-11-02 | 2026-07-17 |
| Forks | ⑂ 2.4K | ⑂ 445 |
| 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 WebApiClient if
- You want the WebApiClient feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and WebApiClient 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 WebApiClient
README 中文文档 WebApiClient A REST API library with better functionality, performance, and scalability than refit. Features Semantic Declaration Client development only requires semantic declaration of C interfaces. Diverse serialization Supports json, xml, form and other custom serialization methods. Full trimmed and AOT Supports full trimmed and AOT publishing of .NET8. Aspect Oriented Programming Supports multiple interceptors, filters, logs, retries, custom caches and other aspects. Code Syntax Analysis Provides syntax analysis and prompts for interface code declarations to help developers avoid using improper…
read the full WebApiClient 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 WebApiClient more popular?
Insomnia has 40,111 GitHub stars and WebApiClient has 2,136. Insomnia has the larger community by that measure.
Are Insomnia and WebApiClient free?
Both are open source. Insomnia is licensed under Apache-2.0 and WebApiClient under MIT. Neither carries a licence fee.
What is the difference between Insomnia and WebApiClient?
Insomnia is written in TypeScript and WebApiClient 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 WebApiClient?
Choose Insomnia if you want the larger community (40,111 stars) or its Apache-2.0 licence terms. Choose WebApiClient if its feature set, stack or MIT licence fits better. Both are self-hostable.