Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac
- Windows
- Linux




apimock-rs (API Mock) is described as 'Developer-friendly, super-lightweight and functional HTTP(S) mock server built in Rust. It provides file-based mechanism for mocking RESTful APIs using static JSON responses. Optionally, dynamic routing is supported: rule-based matching via toml and' and is an app in the development category. There are more than 10 alternatives to apimock-rs (API Mock) for a variety of platforms, including Mac, Windows, Linux, Web-based and SaaS apps. The best apimock-rs (API Mock) alternative is Mockoon, which is both free and Open Source. Other great apps like apimock-rs (API Mock) are Reqable, WireMock, Beeceptor and MockServer.
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.




Reqable is a modern cross-platform project, designed for API development, testing, and debugging. Reqable fully supports HTTP1 and HTTP2 and partially supports HTTP3(QUIC).




WireMock is a simulator for HTTP-based APIs. Some might consider it a service virtualization tool or a mock server.
Build a mock Rest API endpoint in seconds. Helps you in UI development, Webhooks, simulating delays, simulating exceptions and server errors, performance test, etc.



MockServer can be used for mocking any system you integrate with via HTTP or HTTPS (i.e. services, web sites, etc).
Proxy your API, choose which endpoints to mock in the cloud and inspect traffic, for free. Speed up your development and integrations tests.
Mockintosh is a mock server generator that's capable to generate RESTful APIs or communicate with message queues to mimick asyncronous tasks. Such that it enables software development teams to work independently while building and maintaining a complicated microservice...



SOAP/REST Mock Service is a simple configurable framework to mock out SOAP or RESTful (or "REST-like") webservices. It's main goal is to support automated integration testing of applications that integrate with 3rd party webservices.
Collaboration based mock services with persistent data storage, git integration and intelligent proxying to quickly bring user flows to life.






Multi-protocol mock server for HTTP, gRPC, GraphQL, WebSocket, MQTT, SSE, and SOAP. One Go binary, zero dependencies. Supports stateful CRUD, digital twins (passes real SDK tests), chaos engineering, OpenAPI/Postman/HAR/cURL import, and a built-in MCP server for AI agents.

