193 + Github tools and resources

A color contrast checker for modern CSS color formats.

SMTP server & web interface for viewing and testing emails during development.

Resources and materials for learning various cybersecurity concepts and technologies.

Practice Pages For Automating and Testing

Running an adb commands dynamically

Lightweight SQLite editor for Windows

View JSON in a browser, with syntax highlighting, collapsible arrays and objects, and nice readable formatting.


A mutation testing tool for Python 3.3+ source code

Test your tests with mutation testing.


State of the art mutation testing system, providing gold standard test coverage for Java and the jvm.

Automatically detect accessibility issues in web pages using AI

A curated list of snippets to get Web Performance metrics.

An email and SMTP testing tool with API for developers and automated integration testing.


An online tool to test responsive layouts that lets you view multiple device sizes simultaneously, just enter a URL to test.

Kanboard is a free and open source Kanban project management software


An offline documentation browser for software developers and testers.

A user-friendly network monitoring tool, built with Rust, to help you easily keep track of your Internet traffic.

JSON CrackFree with Paid Option

Seamlessly visualize your JSON, XML, TOML, YAML, CSV instantly into graphs!


A tool to help testers test by supporting the entire process of exploratory testing, from gathering evidence to generating test reports.

Use Faker.js UI to easiliy generate fake (but realistic) data for testing and development using Faker.js.

Scan your entire site with Google Lighthouse in 2 minutes (on average).

Measure the performance of any Android app 🔦


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


Taiko is an open source node.js library for testing modern web applications

The purpose of the project is to collect and share malware samples.

A set of free tools that includes a responsive design tester, detect fonts, Chat with any PDF and more.

Offline-first web HTTP client

Monitors the health and web traffic of servers, microservices, Kubernetes/Kafka clusters, containers, and AWS services.

A utility for integration testing of web pages using WebdriverIO and Mocha.

An LLM playground you can run on your laptop.

Write, build and run integration tests based on OpenTelemetry traces with Jest-like syntax.

Pythagora creates automated tests for you by analysing server activity

Use Docker and Dockery Compose to test and find blind cross-site scripting vulnerabilities.

An open-source text substitution tool for Windows.

Easy web performance trace sharing


Commonly used software development and testing tools

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

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

Build your own cloud testing infrastructure.

Snapshot-based stub/mocking of APIs.

A Gorgeous HTML/CSS Reporter for Mocha.js

Your shell history: synced, queryable, and in context


GUI client for gRPC/gRPC-Web

Challenge your apps on iOS with monkey testing 📱🐒