Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
- Language
- TypeScript
- Licence
- MIT
- Stars
- 8.4k
- Latest
- v9.9.0
- Last push
- 2026-10-05
Mock servers
Stand in for HTTP APIs during development and tests with recorded or declared responses.
Changes in this category (RSS)
Side by side
| Tool | Stars | Licence | Terms | Self-hosted | Language | Latest | Last push |
|---|---|---|---|---|---|---|---|
| Mockoon | 8.4k | MIT | Open source | No | TypeScript | v9.9.0 | 2026-10-05 |
| WireMock | 7.4k | Apache-2.0 | Open source | No | Java | 3.13.2 | 2026-10-05 |
| Prism | 5k | Apache-2.0 | Open source | No | TypeScript | v5.16.0 | 2026-10-01 |
| MockServer | 5k | Apache-2.0 | Open source | No | Java | mockserver-8.0.0 | 2026-10-06 |
| mountebank | 2.1k | MIT | Open source | No | JavaScript | v2.9.4 | 2026-10-05 |
| Smocker | 1.3k | MIT | Open source | No | TypeScript | 1.0.0 | 2026-10-04 |
6 tools
A tool for mocking HTTP services
- Language
- Java
- Licence
- Apache-2.0
- Stars
- 7.4k
- Latest
- 3.13.2
- Last push
- 2026-10-05
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
- Language
- TypeScript
- Licence
- Apache-2.0
- Stars
- 5k
- Latest
- v5.16.0
- Last push
- 2026-10-01
MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.
- Language
- Java
- Licence
- Apache-2.0
- Stars
- 5k
- Latest
- mockserver-8.0.0
- Last push
- 2026-10-06
Over the wire test doubles
- Language
- JavaScript
- Licence
- MIT
- Stars
- 2.1k
- Latest
- v2.9.4
- Last push
- 2026-10-05
Smocker is a simple and efficient HTTP mock server and proxy
- Language
- TypeScript
- Licence
- MIT
- Stars
- 1.3k
- Latest
- 1.0.0
- Last push
- 2026-10-04