The best Software Testing tools and resources on the internet.

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

A dark and colorful theme to rule them all

Free code coverage library for Java

Analyze HTML size and catch bloat like inline images, large React hydration state, or code duplication.

A simple-yet-powerful API traffic viewer for Kubernetes.

Microsoft

Run a shell script in an isolated, immutable environment, collect the logs or results.

online JSON formatting and processing tool with powerful functions

Turn any web page into a clean set of resilient, ready-to-use test locators.

A privacy-friendly, open source journaling app for Mac.

Windows inside a Docker container.

A curated repository of highly optimized system prompts and templates for QA engineering tasks.

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

Community curated list of templates for the nuclei engine to find security vulnerabilities in applications.

Measure the performance of any Android app 🔦

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

Free public API to test API endpoints and retrieve dummy JSON data swiftly.

Place kittens as placeholders

A Playwright test reporter that sends formatted email notifications upon test suite completion using Nodemailer.

The ultimate automation scripting language for Windows.

DeepEval is a simple-to-use, open-source LLM evaluation framework, for evaluating large-language model systems.

open-source and complete service-lifecycle platform for Kubernetes

online tool that you can use to check any website’s header status.

Java Scratchpad - Instantly write java snippets and see nicely formatted results.

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

Apple’s official testing framework for unit tests.

A Vite plugin that surfaces performance bottlenecks within your test suite

Multi location based load testing

Thunder Client is a lightweight Rest API Client Extension for Visual Studio Code

Chrome and Firefox extension to discover problem areas in websites.