The best Software Testing tools and resources on the internet.

A dark and colorful theme to rule them all

A CLI diff tool that compares files based on their syntax, not line-by-line. Difftastic produces accurate diffs that are easier for humans to read.

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

🧪 Run common networking tests against your site.

An open source load testing tool.

IDE

SQLite Playground

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

Simplify HTTP Requests and Testing with Plain Text

Open Source File synchronization

SQL Database Explorer [SQLite, libSQL, PostgreSQL, MySQL/MariaDB, DuckDB, ClickHouse]

Automate web applications security assessments

Free Google Docs templates for general use and productivity like project tracking, problem solving, 1:1s, and lots more.

Check compliance with WCAG 2.0 minimum contrast

A Java library for automating data setup in unit tests.

A sensible GraphQL testing tool to test your GraphQL schema locally and in the cloud.

Show multiple screens once, Responsive design tester.

Place kittens as placeholders

Find JavaScript memory leaks and analyzing heap snapshots.

A text-based HTTP client in the browser, an interface-less Postman.

Screenshot tool for Mac

Calculate severity of a bug

Open source Postman alternative with type safety built in.

Library of accessibility automation examples that use multiple different testing frameworks

An open source web accessibility checker

Colour Contrast Analyser (CCA)

Java based testing framework

AI-powered natural language end-to-end testing framework.

A CLI that writes your git commit messages for you with AI

A lightweight, scriptable command runner and task scheduler designed to manage local automation tasks.