head to head · open source
Insomnia vs mockserver-monorepo
Insomnia has 40,109 GitHub stars, 2,387 forks, 874 open issues and last shipped yesterday. mockserver-monorepo has 5,003 stars, 1,118 forks, 6 open issues and last shipped 2 days ago. Insomnia leads on adoption by 702% (40,109 vs 5,003 stars). Insomnia is written in TypeScript under Apache-2.0; mockserver-monorepo is written in Java under Apache-2.0. Insomnia has attracted 6% as many forks as stars, mockserver-monorepo 22%. 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 | mockserver-monorepo | |
|---|---|---|
| GitHub stars | ★ 40K | ★ 5.0K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | TypeScript | Java |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 2.4K | ⑂ 1.1K |
| 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 mockserver-monorepo if
- You want the mockserver-monorepo feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and mockserver-monorepo 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 mockserver-monorepo
MockServer ===== MockServer is an HTTP(S) mock server and proxy for testing. It does three things: Mock the APIs your application depends on, so you can develop and test against systems that are unavailable, incomplete, or hard to reproduce. Proxy real traffic to record, inspect, and modify requests and responses in flight — and pause them at interactive proxy breakpoints to step through, edit, or abort each exchange like a debugger for network traffic. Chaos engineering — make dependencies misbehave on demand, injecting latency, dropped connections, and errors to test how your application copes when the systems…
read the full mockserver-monorepo 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 mockserver-monorepo more popular?
Insomnia has 40,109 GitHub stars and mockserver-monorepo has 5,003. Insomnia has the larger community by that measure.
Are Insomnia and mockserver-monorepo free?
Both are open source. Insomnia is licensed under Apache-2.0 and mockserver-monorepo under Apache-2.0. Neither carries a licence fee.
What is the difference between Insomnia and mockserver-monorepo?
Insomnia is written in TypeScript and mockserver-monorepo in Java. 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 mockserver-monorepo?
Choose Insomnia if you want the larger community (40,109 stars) or its Apache-2.0 licence terms. Choose mockserver-monorepo if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.