testing

A modern load testing tool, using Go and JavaScript.

A next-generation test runner for Rust.

HttpMaster is a professional testing tool for HTTP applications, with special focus on RESTful web services and web API applications.

Renode is an open source software development framework with commercial support from Antmicro that lets you develop, debug and test multi-node device systems reliably, scalably and effectively.

Cross-platform chaos engineering CLI with recovery, SLO gates, and protocol packs.

Hurl is a command line tool that runs HTTP requests defined in a simple plain text format.

The offline, Git-native API workspace.

Vovsoft Proxy Checker is a powerful tool designed to validate and manage your proxy server lists with ease.

Local multi-cloud simulator (AWS/GCP/Azure) with real backends

Selebrow is an open-source tool that simplifies running UI tests with WebDriver-based frameworks like Selenium, Selenide, WebdriverIO (wdio), and Playwright.

A configurable Windows installation simulator for testing repackaging, virtualization, and deployment solutions.

CAT is a powerful tool that helps you to test your data. It's super easy to set up and use.

Simulate a bad network on Windows

HttpMaster Express is a professional testing tool for HTTP applications, with special focus on RESTful web services and web API applications.

Standalone SMTP server designed for viewing received messages

Deterministic correctness testing for MCP servers. CLI, CI, and zero-config audit.

Windows UI Automation Model Context Protocol (MCP) server

A universal GUI for unit testing

An open-source Postman-style API client and JMeter-style load testing desktop app.

OpenAPI mock server with realistic responses, request validation, latency and error simulation, and upstream proxy fallback

A headless terminal CLI + daemon for driving, asserting on, and recording shells

Psychological experiment software for research

Cross-platform input simulation tool for testing and automation

Free and open source test automation framework that takes the pain out of acceptance testing