The best Software Testing tools and resources on the internet.

Over 500+ awesome tools and resources on the internet to supercharge your testing.

No vendor lock-in: Build tests visually. Own them as YAML.

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As a QA professional, you shouldn’t have to choose between fast test creation and control over your test assets. With BugBug, you can now record tests visually and export them as human-readable YAML. Keep them in Git, review changes, create backups, edit them outside the platform, and import them back anytime. Your tests stay portable, reviewable, and under your team’s control. With no vendor lock-in.

See how BugBug's test import & export works →

Mockito

Write clean, maintainable unit tests with minimal boilerplate with Java

The Four Hour Tester

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

Learn Software Testing

Image Elf

Use drag and drop to create dummy images of any size! Fastest way to generate placeholder images with specific dimensions.

RedCoffee

RedCoffee is a Python Based CLI Tool that generates PDF Reports for analysis done using SonarQube Community Edition

ReqBin

ReqBin is an online API testing tool for REST and SOAP APIs.

JSON Formatter

Makes JSON easy to read. Open source.

Awesome Chaos Engineering

A curated list of Chaos Engineering resources.

Learn Software Testing

ct.css

A diagnostic CSS snippet that exposes potential performance issues in your page’s `head` element.

Performance Testing

Quicktype

Convert JSON into gorgeous, typesafe code in any language.

Automated Checking

Sublime Text

$99, evaluation is free and time is not limited

Text Editing, Done Right

Cypress Chrome Recorder

Export Cypress Tests from Google Chrome DevTools' Recorder

Greenshot

A light-weight screenshot software tool for Windows.

Diagrams

🎨 Diagram as Code for prototyping cloud system architectures

Visual Modeling

Browser MCP

Browser MCP connects AI applications to your browser so you can automate tasks using AI. Supported by Claude, Cursor, VS Code, Windsurf, and more.

Automated Checking

APCA Contrast Calculator

Accessible Perceptual Contrast Algorithm

Accessibility Testing

Zap

Scanning tool for security vulnerabilities

Security Testing

ScalaCheck

Property-based testing for Scala

Automated Checking

Learn REST: A RESTful Tutorial

Learn everything there is to know about REST apis with the this opensource resource.

OpenClover

Most sophisticated code coverage tool for Java and Groovy.

Json Pub

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

Cucumber

#BDD

Automated Checking

test-staged

A lightweight CLI tool to run tests on git-staged files before commit pushes.

Awesome Penetration Testing

A collection of awesome penetration testing and offensive cybersecurity resources.

Security Testing

Pee.js

A javascript Library for leaking memory

Test Kitchen

Test Kitchen provides a test harness to execute infrastructure code on one or more platforms in isolation.

Payloads All The Things

A list of useful payloads and bypasses for Web Application Security

Security Testing

happydeliver

Open-source, self-hosted email deliverability testing platform

Mock Service Worker

Mock API by intercepting requests on the network level. Seamlessly reuse the same mock definition for testing, development, and debugging.

DopplerTask

A revolutionary open source software that allows you to easily automate tasks.

Awesome Claude Skills

A curated list of awesome Claude Skills, resources, and tools for customizing Claude AI workflows — particularly Claude Code