The best Software Testing tools and resources on the internet.

Test your prompts, agents, and RAGs. Red teaming, pentesting, and vulnerability scanning for LLMs.

JS performance

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

A tool for generating customizable streaming data with support for various distributions and anomalies.

FREE API for generating placeholder user information. Get profile photos, names, and more. It's like Lorem Ipsum, for people.

A forward proxy for making third party API calls.

Python Memory Profilling

Simplify API Testing with Mock Data

Security standard

Static code analyzer for Infrastructure as Code

Cross-platform test runner for Android and Apple

node:test runner wrapper with TypeScript support

Open-source AI testing agent

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

#BDD

Apple’s official testing framework for unit tests.

A note-taking chrome extension: taking notes on the web with their context.

Simple network mocking for your GraphQL API.

ConEmu starts a console program in a hidden console window, and provides an alternative customizable GUI window with various features

Multiplatform app for your all-in-one password management.

Operatng System

Performance and Infra testing

A open-source menu bar application for creating screen and camera timelapses without excessive file sizes.

Convert JSON into gorgeous, typesafe code in any language.

An easy way to execute a health check against your API endpoint.

An online Python compiler, IDE, and interpreter directly in the browser.

Capture or record a video of your screen, write text or arrows and share it.

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

Test SMTP connection and see the complete SMTP log.

Opensource tool to build end-to-end tests 98% faster utilizing trace-based testing.