Awesome Testing

The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI and Anthropic.

record and replay the web

Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.

Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.

A tool for mocking HTTP services

A collection of public resources about how software companies test their software

Bash Automated Testing System

MockServer is an HTTP(S) mock server and proxy for testing that lets you mock APIs, inspect and modify live traffic, and inject failures. It supports HTTP/1.1, HTTP/2, gRPC, WebSockets, TCP and more on a single port, with additional support for HTTP/3, message brokers, and AI/LLM APIs.

TestLink Open Source Test & Requirement Management System

The Declarative Data Generator

open source test management system with over 2 million downloads!

Self-hosted iOS & Android simulator streaming for the whole team

Open-source self-improving QA agent for software teams. A test harness with memory. Write tests in natural language for web and mobile. agent-qa learns from every run, adapts to UI changes, and catches regressions before you ship.

BDD testing with Playwright runner

Continuous Regression Testing for Engineering Teams

AI-powered E2E testing for 10 platforms. 253 MCP tools. Zero config. Works with Claude, Cursor, Windsurf, Copilot. Test Flutter, React Native, iOS, Android, Web, Electron, Tauri, KMP, .NET MAUI — all from natural language.

OrcaReplay — Time travel for AI agents. Record, replay, fork, and debug any agent run with any model. Built by the OrcaRouter.ai team.

🤖 Repeat tests. Repeat tests. Repeat tests.

🦏 | Best in class Microservice automation testing. Test Driven Happiness

Visual testing for React Native. Catch visual regressions on iOS and Android simulators in the cloud, before they ship.

Visually Validate Playwright Tests Without Flaky Selectors

Interview Test using a To Do List

Test harness for voice agents. Import from Retell, VAPI, Bland, LiveKit. Run autonomous simulations. Evaluate with LLM judges.

AI-Drived end-to-end test platform

Enterprise-grade platform to generate and execute Cypress, Playwright, WebdriverIO, and Appium end-to-end tests from natural language requirements. (Appium is experimental and requires external mobile infrastructure.)

Ultimate web UI for visualizing load test results

Declarative API testing

The E2E AI testing tool | No ML Overhead

Capture, inspect, and replay webhooks with 90-day history + signature verification. Built on Cloudflare Workers + D1.

A toolkit combining Solidity testing and cross-chain deployment tools with Robot Framework. Also some basic components for monitoring EVM compatible blockchains.

Turn requirements into Playwright plans, tests, runs, and repair workflows with a self-hosted AI agent.

An open-source mobile app explicitly designed as a QA automation training playground.

Standalone MCP tools for browser scanning, page inspection, and Playwright reproduction. Local workflow with no QualityMax account required.

Enable and disable tests directly from a Google Spreadsheet — no code changes required.

Vision-enabled AI steps for Playwright tests. Bring your own LLM: OpenAI, Claude, Gemini or TestChimp.

A library that records a program's external inputs — database, HTTP, clock, randomness — and replays them, so any past run can be reproduced and debugged exactly.

Catch silent failures in agent workflows by verifying real system state

Valid, invalid, and edge-case JSON test cases for parsers, validators, editors, APIs, syntax highlighting, and error handling.

VertaaUX CLI — UX, accessibility, and conversion audits from the terminal (npm: @vertaaux/cli)

Postal code formats, validation regexes and 9,000 real sample codes for 31 countries. Every regex verified against the samples in CI. Zero dependencies.