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




mockd is described as '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' and is an app in the ai tools & services category. There are more than 10 alternatives to mockd for a variety of platforms, including Web-based, Mac, Windows, Linux and SaaS apps. The best mockd alternative is Mockoon, which is both free and Open Source. Other great apps like mockd are Beeceptor, WireMock, apimock-rs (API Mock) and MockServer.
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.




Build a mock Rest API endpoint in seconds. Helps you in UI development, Webhooks, simulating delays, simulating exceptions and server errors, performance test, etc.



WireMock is a simulator for HTTP-based APIs. Some might consider it a service virtualization tool or a mock server.
apimock-rs (API Mock) is a 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...

MockServer can be used for mocking any system you integrate with via HTTP or HTTPS (i.e. services, web sites, etc).
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.
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...











Collaboration based mock services with persistent data storage, git integration and intelligent proxying to quickly bring user flows to life.


Online API Mocking Tool: API Mock, fake API, stub API, simulate API, dummy API. Capture and debug requests instantly. Forward requests to localhost for webhooks testing and debugging. More than 100 random or faker shortcodes for response templating.



With Mockaron, create mock REST APIs without server configuration or setup. Its intuitive and no-code app makes it super easy to get started.


