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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.
Boilerplate-free mocking framework for Swift!
Swift HTTP Networking with stubbing and caching support
In-page HTTP controller for frontend development. Intercept, modify, and simulate API responses directly in the browser.
Enable network mocks and more in UI Tests
HTTP mock for Golang: record and replay HTTP/HTTPS interactions for offline testing
Simplify software testing, by easily mocking any system using HTTP/HTTPS, allowing a team to test and develop against a service that is not complete or is unstable or just to reproduce planned/edge cases.
Java binding for Hoverfly
SMTP mock server written on Golang. Mimic any 📤 SMTP server behavior for your test environment with fake SMTP server.
Mock an SSH server and define all commands it supports (Python, Twisted)
🌏 A zero-dependency networking solution for building modern and secure iOS, watchOS, macOS and tvOS applications.
Cache and mock network requests in Playwright
DNS mock server written on 💎 Ruby. Mimic any DNS records for your test environment with fake DNS server.
💎 Ruby SMTP mock. Mimic any 📤 SMTP server behavior for your test environment with fake SMTP server.
Mocker + Proxy Application