Ranked by Attention Score: stars gained over the last 30 complete days
1–100 of 514 by Attention Score · Oct 5, 2026 – Nov 3, 2026 (UTC)
Global edition of ARTEX — an LLM multi-agent autonomous penetration-testing framework. English default, switchable to Korean/Chinese/Spanish/Japanese. For authorized, defensive and detection use only. (upstream: Autumn-27/ARTEX, AGPL-3.0)
Light, fluffy, and always free - The AWS Local Emulator alternative
Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.
A contract-driven gRPC regression harness for AI coding agents, with human-approved baselines. Snapshot the valid call chains of an API so an agent can look one up instead of tracing for it. gRPC today, OpenAPI next
Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.
Self-hosted iOS & Android simulator streaming for the whole team
Implement one small API on SQLite in any language; we benchmark it on a $12 server (1 vCPU, 2 GB)
See interfaces like a human. E2E testing in natural language.
Painless E2E Automation for Mobile and Web
A modern load testing tool, using Go and JavaScript
An email and SMTP testing tool with API for developers
OSS-Fuzz - continuous fuzzing for open source software.
📊 APIs for Web Scraping, Browser Automation, and E2E Testing. CDP Mode & Stealthy Playwright Mode bypass bot-detection/CAPTCHAs.
🛡 Official AI Security Tool module for CVE-2026-54121 (Certighost): AD CS certificate abuse deep-dive, defensive audit workflows, and safe in-app console execution for authorized Active Directory security testing.
Next generation testing framework powered by Vite.
Accessibility engine for automated Web UI testing
Feel how fast a local LLM runs before you buy the hardware
Mutation testing for JavaScript and friends
Cross-platform automation framework for all kinds of apps, built on top of the W3C WebDriver protocol
GoogleTest - Google Testing and Mocking Framework
:alarm_clock: :fire: A TCP proxy to simulate network and system conditions for chaos and resiliency testing
The pytest framework makes it easy to write small tests, yet scales to support complex functional testing
Test suites for Web platform specs — including WHATWG, W3C, and others
TranslatedOhayou (おはよう, "good morning"), HTTP load generator, inspired by rakyll/hey with tui animation.
The property-based testing library for Python
Catch API bugs before your users do
The industry standard for API mocking in JavaScript.
Write scalable load tests in plain Python 🚗💨
Hurl, run and test HTTP requests with plain text.
AFL++ is a state-of-the-art fuzzer, and #1 in benchmarks. It was originally based on AFL. Today it comes with qemu 5.1, collision-free coverage, enhanced laf-intel & redqueen, AFLfast++ power schedules, MOpt mutators, unicorn_mode, and a lot more!
Calculate the real cost to run your JS app or lib to keep good performance. Show error in pull request if the cost exceeds the limit.
A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch)
Faker is a Python package that generates fake data for you.
TranslatedMeterSphere is a new-generation open-source continuous testing tool with a built-in AI assistant, making software testing simpler and more efficient so that it no longer becomes a bottleneck for continuous delivery.
Generic automation framework for acceptance testing and RPA
Synthetic Patient Population Simulator
Get a full fake REST API with zero coding in less than 30 seconds (seriously)
Fast, easy and reliable testing for anything that runs in a browser.
Portable AI code quality reviews for Codex, Cursor, Copilot and other coding agents: six Agent Skills for architecture, technical debt, tests and remediation.
Delightful JavaScript Testing.
syzkaller is an unsupervised coverage-guided kernel fuzzer
Most advanced XSS scanner.
A toolkit with common assertions and mocks that plays nicely with the standard library
Apache JMeter open-source load testing tool for analyzing and measuring the performance of a variety of services
A library that allows you to easily mock out tests based on AWS infrastructure.
A framework for distributed systems verification, with fault injection
Free, open-source AWS emulator. LocalStack alternative: 107 services, 7,657 operations, true 100% Smithy conformance (258,545/258,545 variants pass). No account, no auth token, no paid tier.
Generate massive amounts of fake data in the browser and node.js
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
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.
HTTP load testing tool and library. It's over 9000!
Embedded unit testing framework for Godot 4 supporting GDScript and C#. Features test-driven development, embedded test inspector, extensive assertions, mocking, scene testing.
Hercules is the world’s first open-source testing agent, enabling UI, API, Security, Accessibility, and Visual validations – all without code or maintenance. Automate testing effortlessly and let Hercules handle the heavy lifting! ⚡
Next-gen browser and mobile automation test framework for Node.js
Command line driven CI frontend and development task automation tool.
The elegant testing framework for PHP developers and AI agents.
A Java architecture test library, to specify and assert architecture rules in plain Java
🚀🎉📚 Nextjs Boilerplate and Starter with App Router and Page Router support, Tailwind CSS 4 and TypeScript ⚡️ Made with developer experience first: Next.js 16 + TypeScript + ESLint + Prettier + Drizzle ORM + Husky + Lint-Staged + Vitest + Testing Library + Playwright + Storybook + Commitlint + VSCode + Sentry + PostCSS + Tailwind CSS ✨
Build data pipelines with SQL and Python, ingest data from different sources, add quality checks, and build end-to-end flows.
Test Automation Made Simple
☕️ Classic, reliable, trusted test framework for Node.js and the browser
Godot Unit Test. Unit testing tool for Godot Game Engine.
BDD testing with Playwright runner
The complete load testing platform. Everything you need for production-grade load tests. Serverless & distributed. Load test with Playwright. Load test HTTP APIs, GraphQL, WebSocket, and more. Use any Node.js module.
Automate running Lighthouse for every commit, viewing the changes, and preventing regressions
📸 Delightful Swift snapshot testing.
AI Skill for Playwright Best Practices—made by Currents.dev
Mutation testing for .NET core and .NET framework!
Database anonymization and test data management
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
Testcontainers for Go is a Go package that makes it simple to create and clean up container-based dependencies for automated integration/smoke tests. The clean, easy-to-use API enables developers to programmatically define containers that should be run as part of a test and clean up those resources when the test is done.
Mimesis is a Python library for generating fake but realistic data in multiple languages and locales.
Modular, zero-dependency testing framework for Go. Featuring plugins, suites, parallel tests and much more!
Powerful .NET library for benchmarking
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.
TestDino Playwright Skill: AI-powered guides for Playwright best practices, made by testdino.com.
Random fake data generator written in go
Pester is the ubiquitous test and mock framework for PowerShell.
🐐 Simple and complete React DOM testing utilities that encourage good testing practices.
Gray box end-to-end testing and automation framework for mobile apps
The fastest feature-rich C++11/14/17/20/23 single-header testing framework
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
A curated list of awesome Fuzzing(or Fuzz Testing) for software security
Browser automation engine benchmark - Test bypass rates, performance & stealth against Cloudflare, DataDome, reCAPTCHA, Kasada, Imperva, Akamai, PerimeterX and other bot detection systems. Find the best browser for scraping.
Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
💼 An enterprise-grade Next.js boilerplate for high-performance, maintainable apps. Packed with features like Tailwind CSS, TypeScript, ESLint, Prettier, testing tools, and more to accelerate your development.
Quick and Easy server testing/validation
🔐 A CLI tool to extract server certificates
Scriptable database and system performance benchmark