The best Software Testing tools and resources on the internet.

Convert video from nearly any format to a selection of modern, widely supported codecs.

An extension to the standard windows clipboard.

A Vite plugin that surfaces performance bottlenecks within your test suite

Various recipes for testing common scenarios with Cypress

Checks contrast for WCAG compliance

⏰ 🔥 A TCP proxy to simulate network and system conditions for chaos and resiliency testing

Delightful JavaScript Testing Framework

Install curated QA testing skills into Claude Code, Cursor, Copilot, and 30+ AI agents. One command, instant expertise.

Taiko is an open source node.js library for testing modern web applications

Encode & decode strings, bytes, and integers to Base62

No WebDriver required. No manual timeouts needed. Cross-browser testing out-of-the-box.

Gray box end-to-end testing and automation framework for mobile apps

Easy web performance trace sharing

Lint an npm or Yarn lockfile to analyze and detect security issues via predefined security policies.

Pretty fancy and modern terminal file manager.

By MicroFocus

Test automation for everyone - test automation platform with support for web (selenium), desktop, database, api and much more. Coding not required ;-)

Snapshot-based stub/mocking of APIs.

A Claude Skill to give your agent the ability to use a web browser

TCP proxy with variable latency

A blazing fast unit-test framework powered by Vite ⚡️

Inspect a command's effects before modifying your live system

Generate up to 1,000 rows of realistic test data in CSV, JSON, SQL, and Excel formats. Free!

pytest plugin for semantic LLM output testing — validate meaning, not just shape

Automate CHANGELOG generation

A collection of real-world serverless architecture failures, massive cloud bills, and architectural anti-patterns.

Automate the Windows GUI and general scripting

A debug bridge for Android applications.

A configurable suite of production-grade QA workflow skills for Claude Code covering specification analysis, test design, automation, performance, security, and release.

Hypothesis is a modern implementation of property based testing, designed from the ground up for mainstream languages.