The best Software Testing tools and resources on the internet.

An open source approach to locally record and enable searching everything you view on your Mac.

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

Brings the power of REST Assured to the C# / .NET ecosystem by Simplifying HTTP Testing

Exploratory testing assistant for Chrome and Firefox

An interactive page that lets you fiddle around with various performance metrics so you can determine which parts will affect your final Lighthouse score.

Ultimate Network Service Exploitation Tool

Simplify HTTP Requests and Testing with Plain Text

An assertion library for Kotlin intended for use with a test runner such as JUnit, Minutest, Spek, or KotlinTest

Enhancing Web Accessibility Testing with Cypress

over 80–100 fully free, online tools for developers, designers, covering coding, design, graphics, text editing, image, network, cryptography and more..

Check how well your Web Application Firewall (WAF) protects your product against common web attacks.

A cross-platform test runner that brings the JavaScript essence back to testing.

Open-source AI testing agent

Quick and visual way to verify server-side rendering (SSR) on any web page.

Find the best cursor rules for your framework and language

Unified dashboard summarizing results from the Web Platform Tests (WPT)

Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman

Test your prompts, agents, and RAGs. Red teaming, pentesting, and vulnerability scanning for LLMs.

Write clean, maintainable unit tests with minimal boilerplate with Java

Reliable, clean database tests without worrying about cleanup

Track and monitor server hardware, uptime, response times, and incidents in real-time with beautiful visualizations

A clean and readable Playwright reporter that turns noisy test output into structured, timestamped, developer-friendly logs — all right in the terminal.

Reclaim tens of gigabytes of your storage used for various Xcode caches

Generate a visualization of your JSON, XML, CSV, YAML, SVG, .INI, serialized, hex, base64, or binary data local only, and share data via a URL

benchmark tooling that loves you ❤️

Online REST API client

A test automation framework for Android devices.

Password generator and password manager for Windows with full Unicode support.

Virtualize macOS 12 and later on Apple Silicon

A color contrast checker for modern CSS color formats.