The best Software Testing tools and resources on the internet.

Checks contrast for WCAG compliance

Accessible Perceptual Contrast Algorithm

An online JSON viewer that lets you minify, beautify, and load JSON from a file.

Fast Desktop Switching.

free web app to perform functions like DNS lookups, port checks port scans, IP Information gathering, hash generation, blacklist checks, subnet calculation and more..

A HTTP benchmarking tool based mostly on wrk

An CLI assistant that responds by generating and auto-executing a Python script.

The easiest way to identify fonts on web pages.

A tool to programmatically edit and orchestrate JMeter JMX test plans in CI/CD pipelines.

Dashboards for organizing tasks

An AI-powered CLI tool designed to automate code modifications, package updates, and codebase refactoring.

Observable Integration Testing using OpenTelemetry on top of Jest/Playwright/Cypress.

Easiliy generate fake (but realistic) data for testing and development using Faker.js.

A fluent Java API for dynamically building XPath locators for Selenium WebDriver.

#BDD

Learn software testing by focusing on simple exercises that take at most one hour to complete.

This simple yet effective tool helps you compare two texts, and reveals the similarities and differences.

A javascript Library for leaking memory

Healenium improves stability of Selenium-based test cases, handling changes of updated web elements.

Finder Toolbar app for macOS to open the current directory in Terminal

`astro-font` will automatically optimize your Custom Fonts, Local Fonts, Fonts over any CDN and Google fonts for performance.

Avoid costly downtime. Minimize your risk of system failure by proactively testing for weaknesses before they become outages.

Free LLM API pricing comparison. Compare GPT-5, Claude, Gemini & DeepSeek costs instantly. Updated daily with official prices from OpenAI, Anthropic & more.

Test While Developing (TWD) - in-browser testing for React, Vue, Angular, and Solid.js applications

test maximum achievable bandwidth on IP networks.

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

Learn how to catch bugs and break software as you discover different testing methods that will help you build better software.

Mobile Security Framework (MobSF) is an automated, all-in-one mobile application (Android/iOS/Windows) pen-testing, malware analysis and security assessment framework capable of performing static and dynamic analysis.

Visualize yout DataBase in SQL Schema graph.

Smartphone and tablet simulator to test your mobile site on various devices.