WireMock is a simulator for HTTP-based APIs. Some might consider it a service virtualization tool or a mock server.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Mac
- Windows
- Linux
Beeceptor is described as 'Build a mock Rest API endpoint in seconds. Helps you in UI development, Webhooks, simulating delays, simulating exceptions and server errors, performance test, etc' and is an app in the development category. There are more than 25 alternatives to Beeceptor for a variety of platforms, including Web-based, SaaS, Linux, Mac and Windows apps. The best Beeceptor alternative is Fossorial Pangolin, which is both free and Open Source. Other great apps like Beeceptor are ngrok, apimock-rs (API Mock), Mockoon and wireport.
WireMock is a simulator for HTTP-based APIs. Some might consider it a service virtualization tool or a mock server.
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.


Runscope helps you monitor, log and measure API usage to solve API problems fast. Automatically monitor APIs without any coding. Runscope provides complete logging for all of your API traffic. Track down troublesome API calls with powerful search.





MockServer can be used for mocking any system you integrate with via HTTP or HTTPS (i.e. services, web sites, etc).
GhostlyShare is a lightweight developer tool for Windows and Linux that makes local web apps publicly accessible in seconds.




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.
Request inspection, debug web hooks, http clients etc. Crete an endpoint to collect and test an application. All request sent to this endpoint are forwarded to you in real time




Bearer is a developer tool that helps engineering teams monitor API requests, track performance, detect anomalies, and fix issues for their critical API usage. The solution monitors all outgoing API requests without proxying traffic.




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...



Instantly create HTTP mock API endpoints with custom responses, dynamic path params, custom headers, configurable delays, and real-time traffic logs.








MockBolt lets you paste any JSON and instantly get a live mock HTTP endpoint — no signup, no install, no CLI.

Runscope does not mock APIs, just monitors their uptime.