1.microsoft / playwright
Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.
+5,396 stars
from 93,664 · score 8.59
Trending repositories
Ranked by Attention Score: stars gained over the last 90 complete days
1–100 of 278 by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
2.promptfoo / promptfoo
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.
+2,943 stars
from 23,761 · score 7.99
3.usebruno / bruno
Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)
+2,091 stars
from 45,889 · score 7.65
4.jo-duchan / tapflow
Self-hosted iOS & Android simulator streaming for the whole team
+1,195 stars
from 277 · score 7.09
5.web-infra-dev / midscene
See interfaces like a human. E2E testing in natural language.
+1,036 stars
from 14,423 · score 6.94
6.hoppscotch / hoppscotch
Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia
+1,031 stars
from 79,686 · score 6.94
7.storybookjs / storybook
Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation
+929 stars
from 90,492 · score 6.84
8.keploy / keploy
Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.
+903 stars
from 18,071 · score 6.81
9.puppeteer / puppeteer
JavaScript API for Chrome and Firefox
+639 stars
from 95,144 · score 6.46
10.goldbergyoni / nodebestpractices
✅ The Node.js best practices list (July 2026)
+532 stars
from 105,171 · score 6.28
11.addyosmani / web-quality-skills
Agent Skills for optimizing web quality based on Lighthouse and Core Web Vitals.
+458 stars
from 2,564 · score 6.13
12.stryker-mutator / stryker-js
Mutation testing for JavaScript and friends
+333 stars
from 2,977 · score 5.81
13.pytest-dev / pytest
The pytest framework makes it easy to write small tests, yet scales to support complex functional testing
+326 stars
from 14,334 · score 5.79
14.HypothesisWorks / hypothesis
The property-based testing library for Python
+317 stars
from 8,813 · score 5.76
15.web-platform-tests / wpt
Test suites for Web platform specs — including WHATWG, W3C, and others
+305 stars
from 5,998 · score 5.72
16.Shopify / toxiproxy
:alarm_clock: :fire: A TCP proxy to simulate network and system conditions for chaos and resiliency testing
+274 stars
from 12,204 · score 5.62
17.foundry-rs / foundry
Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
+258 stars
from 10,486 · score 5.56
18.schemathesis / schemathesis
Catch API bugs before your users do
+243 stars
from 3,493 · score 5.50
19.metersphere / metersphere
MeterSphere 是新一代的开源持续测试工具，内置 AI 助手，让软件测试工作更简单、更高效，不再成为持续交付的瓶颈。
+231 stars
from 13,368 · score 5.45
20.Orange-OpenSource / hurl
Hurl, run and test HTTP requests with plain text.
+222 stars
from 19,071 · score 5.41
21.quii / learn-go-with-tests
Learn Go with test-driven development
+218 stars
from 23,715 · score 5.39
22.catchorg / Catch2
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)
+217 stars
from 21,323 · score 5.38
23.robotframework / robotframework
Generic automation framework for acceptance testing and RPA
+207 stars
from 11,767 · score 5.34
24.antonbabenko / terraform-skill
Terraform & OpenTofu Skill for AI Agents - testing, modules, CI/CD, and production patterns
+200 stars
from 2,234 · score 5.30
25.joke2k / faker
Faker is a Python package that generates fake data for you.
+186 stars
from 19,292 · score 5.23
26.ultrafunkamsterdam / undetected-chromedriver
Custom Selenium Chromedriver | Zero-Config | Passes ALL bot mitigation systems (like Distil / Imperva/ Datadadome / CloudFlare IUAM)
+182 stars
from 12,713 · score 5.21
27.AFLplusplus / AFLplusplus
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!
+178 stars
from 6,668 · score 5.19
28.stretchr / testify
A toolkit with common assertions and mocks that plays nicely with the standard library
+173 stars
from 26,067 · score 5.16
29.pestphp / pest
The elegant testing framework for PHP developers and AI agents.
+167 stars
from 11,587 · score 5.12
30.bats-core / bats-core
Bash Automated Testing System
+163 stars
from 6,173 · score 5.10
31.chromedp / chromedp
A faster, simpler way to drive browsers supporting the Chrome DevTools Protocol.
+161 stars
from 13,185 · score 5.09
32.localstack / localstackArchived
💻 A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline
+157 stars
from 64,968 · score 5.06
33.jestjs / jest
Delightful JavaScript Testing.
+156 stars
from 45,315 · score 5.06
34.DeviceFarmer / stf
Control and manage Android devices from your browser.
+140 stars
from 4,495 · score 4.95
35.antonio-morales / Fuzzing101
An step by step fuzzing tutorial. A GitHub Security Lab initiative
+127 stars
from 3,799 · score 4.85
36.FlaUI / FlaUI
UI automation library for .Net
+120 stars
from 3,071 · score 4.80
37.karatelabs / karate
Test Automation Made Simple
+112 stars
from 8,890 · score 4.73
38.go-rod / rod
A Chrome DevTools Protocol driver for web automation and scraping.
+112 stars
from 7,031 · score 4.73
39.test-zeus-ai / testzeus-hercules
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! ⚡
+111 stars
from 1,099 · score 4.72
40.google / syzkaller
syzkaller is an unsupervised coverage-guided kernel fuzzer
+107 stars
from 6,279 · score 4.68
41.godot-gdunit-labs / gdUnit4
Embedded unit testing framework for Godot 4 supporting GDScript and C#. Features test-driven development, embedded test inspector, extensive assertions, mocking, scene testing.
+106 stars
from 1,180 · score 4.67
42.phpstan / phpstan
PHP Static Analysis Tool - discover bugs in your code without running it!
+105 stars
from 14,041 · score 4.66
43.unionai-oss / pandera
A light-weight, flexible, and expressive statistical data testing library
+102 stars
from 4,405 · score 4.63
44.testcontainers / testcontainers-go
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.
+94 stars
from 4,926 · score 4.55
45.testing-library / react-testing-library
🐐 Simple and complete React DOM testing utilities that encourage good testing practices.
+91 stars
from 19,585 · score 4.52
46.pointfreeco / swift-snapshot-testing
📸 Delightful Swift snapshot testing.
+89 stars
from 4,299 · score 4.50
47.alexei-led / pumba
Chaos testing, network emulation, and stress testing tool for containers
+89 stars
from 3,093 · score 4.50
48.TheJambo / awesome-testing
A curated list of testing resources
+89 stars
from 2,320 · score 4.50
49.artilleryio / artillery
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.
+86 stars
from 9,025 · score 4.47
50.doctest / doctest
The fastest feature-rich C++11/14/17/20/23 single-header testing framework
+86 stars
from 6,816 · score 4.47
51.testcontainers / testcontainers-java
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.
+78 stars
from 8,680 · score 4.37
52.mock-server / mockserver-monorepo
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.
+78 stars
from 4,925 · score 4.37
53.vitalets / playwright-bdd
BDD testing with Playwright runner
+77 stars
from 746 · score 4.36
54.wix / Detox
Gray box end-to-end testing and automation framework for mobile apps
+75 stars
from 11,976 · score 4.33
55.microcks / microcks
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
+75 stars
from 1,998 · score 4.33
56.goss-org / goss
Quick and Easy server testing/validation
+72 stars
from 5,928 · score 4.29
57.tox-dev / tox
Command line driven CI frontend and development task automation tool.
+71 stars
from 3,908 · score 4.28
58.leancodepl / patrol
Flutter-first UI testing framework. Ready for action!
+69 stars
from 1,387 · score 4.25
59.fityanos / awesome-quality-assurance-roadmap
:books: The starting point of your career as a Software Quality Assurance Engineer | Quality Automation Engineer :books:
+68 stars
from 2,136 · score 4.23
60.mochajs / mocha
☕️ Classic, reliable, trusted test framework for Node.js and the browser
+67 stars
from 22,846 · score 4.22
61.pester / Pester
Pester is the ubiquitous test and mock framework for PowerShell.
+63 stars
from 3,309 · score 4.16
62.mxschmitt / awesome-playwright
A curated list of awesome tools, utils and projects using Playwright
+62 stars
from 1,541 · score 4.14
63.goldbergyoni / javascript-testing-best-practices
📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2025)
+61 stars
from 24,545 · score 4.13
64.postmanlabs / httpbin
HTTP Request & Response Service, written in Python + Flask.
+61 stars
from 13,580 · score 4.13
65.kiwitcms / Kiwi
open source test management system with over 2 million downloads!
+60 stars
from 1,223 · score 4.11
66.AnthonyLloyd / CsCheck
Random testing library for C#
+60 stars
from 210 · score 4.11
67.gruntwork-io / terratest
Terratest is a Go library that makes it easier to write automated tests for your infrastructure code.
+59 stars
from 7,930 · score 4.09
68.testcontainers / testcontainers-node
Testcontainers is a NodeJS library that supports tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
+54 stars
from 2,579 · score 4.01
69.nvim-java / nvim-java
Painless Java in Neovim
+52 stars
from 1,674 · score 3.97
70.onsi / ginkgo
A Modern Testing Framework for Go
+50 stars
from 9,021 · score 3.93
71.ozontech / testo
Modular, zero-dependency testing framework for Go. Featuring plugins, suites, parallel tests and much more!
+50 stars
from 138 · score 3.93
72.probelabs / goreplay
GoReplay is an open-source tool for capturing and replaying live HTTP traffic into a test environment in order to continuously test your system with real data. It can be used to increase confidence in code deployments, configuration changes and infrastructure changes.
+49 stars
from 19,276 · score 3.91
73.mockito / mockito
Most popular Mocking framework for unit tests written in Java
+49 stars
from 15,403 · score 3.91
74.vektra / mockery
A mock code autogenerator for Go
+46 stars
from 7,129 · score 3.85
75.pybuilder / pybuilder
Software build automation tool for Python.
+45 stars
from 2,021 · score 3.83
76.abhivaikar / howtheytest
A collection of public resources about how software companies test their software
+44 stars
from 6,839 · score 3.81
77.lk-geimfari / mimesis
Mimesis is a Python library for generating fake but realistic data in multiple languages and locales.
+44 stars
from 4,822 · score 3.81
78.kevin1024 / vcrpy
Automatically mock your HTTP interactions to simplify and speed up testing
+44 stars
from 2,978 · score 3.81
79.Timendus / chip8-test-suite
A collection of ROM images with tests that will aid you in developing your own CHIP-8, SUPER-CHIP or XO-CHIP interpreter (or "emulator")
+44 stars
from 736 · score 3.81
80.devpi / devpi
Python PyPi staging server and packaging, testing, release tool
+43 stars
from 1,206 · score 3.78
81.testcontainers / testcontainers-dotnet
A library to support tests with throwaway instances of Docker containers for all compatible .NET Standard versions.
+42 stars
from 4,330 · score 3.76
82.infection / infection
PHP Mutation Testing library
+36 stars
from 2,228 · score 3.61
83.denji / awesome-http-benchmark
HTTP(S) benchmark tools, testing/debugging, & restAPI (RESTful)
+33 stars
from 3,756 · score 3.53
84.SpectoLabs / hoverfly
Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
+33 stars
from 2,500 · score 3.53
85.sqlancer / sqlancer
Automated testing to find logic and performance bugs in database systems
+33 stars
from 1,737 · score 3.53
86.Wisser / Jailer
Database Subsetting and Relational Data Browsing Tool.
+32 stars
from 3,184 · score 3.50
87.tarampampam / webhook-tester
🔭 Powerful tool for testing WebHooks and more
+32 stars
from 520 · score 3.50
88.react-cosmos / react-cosmos
Sandbox for developing and testing UI components in isolation
+31 stars
from 8,662 · score 3.47
89.cweill / gotests
Automatically generate Go test boilerplate from your source code.
+30 stars
from 5,310 · score 3.43
90.codeceptjs / CodeceptJS
Supercharged End 2 End Testing Framework for NodeJS
+30 stars
from 4,219 · score 3.43
91.shouldly / shouldly
Should testing for .NET—the way assertions should be!
+30 stars
from 3,395 · score 3.43
92.microsoft / testfx
This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.
+30 stars
from 1,027 · score 3.43
93.padamson / playwright-rust
Rust language bindings for Microsoft Playwright
+30 stars
from 135 · score 3.43
94.avajs / ava
Node.js test runner that lets you develop with confidence 🚀
+29 stars
from 20,798 · score 3.40
95.Hakky54 / certificate-ripper
🔐 A CLI tool to extract server certificates
+29 stars
from 918 · score 3.40
96.VerifyTests / Verify
Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.
+28 stars
from 3,445 · score 3.37
97.qawolf / cli
QA Wolf from anywhere — your terminal, your CI, your AI agent.
+27 stars
from 3,431 · score 3.33
98.DATA-DOG / go-sqlmock
Sql mock driver for golang to test database interactions
+26 stars
from 6,547 · score 3.30
99.ChangemakerStudios / Papercut-SMTP
Papercut SMTP -- The Simple Desktop Email Server
+26 stars
from 3,312 · score 3.30
+26 stars
from 1,621 · score 3.30