The best Software Testing tools and resources on the internet.

A CSS stylesheet to quickly highlight a11y concerns.

Differencing and merging tool for Windows

Visualise tab order with ease

Automation of GUI components with mouse and keyboard actions.

In-app debugging tool for React Native development. Monitor network requests, WebSocket events, console logs, and analytics in real-time.

The test framework for Powershell

🎨 Regex visualizer & editor

Web CSV Generator is a web-based random CSV data generator written in JavaScript. It allows to generate CSV files.

A Linux system resource monitor with support for Mac in development.

Great tool for checking color contrast for both text and images of text.

Browser driver API

Test how well LLM agents use your MCP tools, compare different models, and track quality over time.

Automatically heals Playwright tests when selectors change, minimizing test maintenance and flaky-test rates.

Run a shell script in an isolated, immutable environment, collect the logs or results.

Create mock APIs in seconds

Capture videos on Android devices.

Static analysis at ludicrous speed.

Open-source, self-hosted email deliverability testing platform

For web and enterprise development

Collect your thoughts and notes without leaving the command line.

Perform visual testing with record and play Brimstone pixel-perfect webpage automation tests.

An extension that allows for Bionic Reading on any webpage!

Record videos from the camera or capture from the screen.

UI Test Automation for Unity applications

Measure sizes, distances, margins and paddings of any element on any web page.

A tool to test web content for accessibility and 508 compliance.

powerful and intuitive assertion library for Java

FREE API for generating placeholder user information. Get profile photos, names, and more. It's like Lorem Ipsum, for people.

Auto-transform JavaScript comments into Playwright steps

Find the best cursor rules for your framework and language