The best Software Testing tools and resources on the internet.

The best way to mock JavaScript fetch requests

Place kittens as placeholders

An interactive page that lets you fiddle around with various performance metrics so you can determine which parts will affect your final Lighthouse score.

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

Generate insightful PDF Reports for code analysis done using SonarQube Community Edition

test maximum achievable bandwidth on IP networks.

An open source documentation about Android UI testing.

online JSON formatting and processing tool with powerful functions

UI automation library for .Net

Automate web applications security assessments

Python Memory Profilling

Exports and browses your Cursor AI chat history

Generate realistic test data with simple yet powerful syntax.

A custom Playwright reporter that exports test execution metrics to StatsD, Prometheus, and Grafana.

A modern yet simple multi-platform video cutter and joiner.

An open-source terminal emulator for Mac or Linux.

Smartly scan web pages and extract AI-enhanced XPaths for automation.

Creates easy to read HTML file from axe-core accessibility results object

Accessibility engine for automated Web UI testing

A HTTP benchmarking tool based mostly on wrk

A .NET library for Basic Assertions

A command line search tool.

Automate web app testing easier than ever. Without excessive costs. Faster than coding. Free forever.

Receive SMS Online - 100% Free

A chaos engineering and fault injection proxy for AI agents (Claude Code, GitHub Copilot, Codex, OpenCode) to test resilience under network latency, rate limits, malformed payloads, and tool failures.

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

Generate a matching regular expression from the test cases you provide

Layout and functional testing framework for websites.

Privacy-focused and 100% local API testing tool.

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