1.microsoft / playwright
Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.
+11,535 stars
from 87,525 · score 9.35
Trending repositories
Ranked by Attention Score: stars gained over the last 180 complete days
1–100 of 258 by Attention Score · May 7, 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.
+6,076 stars
from 20,628 · score 8.71
3.usebruno / bruno
Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)
+4,832 stars
from 43,148 · score 8.48
4.web-infra-dev / midscene
See interfaces like a human. E2E testing in natural language.
+2,656 stars
from 12,803 · score 7.88
5.keploy / keploy
Open-source platform for creating safe, isolated production sandboxes for API, integration, and E2E testing.
+2,368 stars
from 16,606 · score 7.77
6.hoppscotch / hoppscotch
Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia
+2,191 stars
from 78,526 · score 7.69
7.storybookjs / storybook
Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation
+2,061 stars
from 89,360 · score 7.63
8.puppeteer / puppeteer
JavaScript API for Chrome and Firefox
+2,019 stars
from 93,764 · score 7.61
9.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)
+1,306 stars
from 20,234 · score 7.18
10.addyosmani / web-quality-skills
Agent Skills for optimizing web quality based on Lighthouse and Core Web Vitals.
+1,170 stars
from 1,852 · score 7.07
11.goldbergyoni / nodebestpractices
✅ The Node.js best practices list (July 2026)
+1,129 stars
from 104,574 · score 7.03
12.pytest-dev / pytest
The pytest framework makes it easy to write small tests, yet scales to support complex functional testing
+940 stars
from 13,720 · score 6.85
13.antonbabenko / terraform-skill
Terraform & OpenTofu Skill for AI Agents - testing, modules, CI/CD, and production patterns
+657 stars
from 1,777 · score 6.49
14.localstack / localstackArchived
💻 A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline
+607 stars
from 64,518 · score 6.41
15.HypothesisWorks / hypothesis
The property-based testing library for Python
+576 stars
from 8,554 · score 6.36
16.foundry-rs / foundry
Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
+533 stars
from 10,211 · score 6.28
17.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。
+522 stars
from 13,077 · score 6.26
18.Orange-OpenSource / hurl
Hurl, run and test HTTP requests with plain text.
+512 stars
from 18,781 · score 6.24
19.Shopify / toxiproxy
:alarm_clock: :fire: A TCP proxy to simulate network and system conditions for chaos and resiliency testing
+507 stars
from 11,971 · score 6.23
20.schemathesis / schemathesis
Catch API bugs before your users do
+488 stars
from 3,248 · score 6.19
21.stryker-mutator / stryker-js
Mutation testing for JavaScript and friends
+467 stars
from 2,843 · score 6.15
22.quii / learn-go-with-tests
Learn Go with test-driven development
+455 stars
from 23,478 · score 6.12
23.web-platform-tests / wpt
Test suites for Web platform specs — including WHATWG, W3C, and others
+446 stars
from 5,857 · score 6.10
24.ultrafunkamsterdam / undetected-chromedriver
Custom Selenium Chromedriver | Zero-Config | Passes ALL bot mitigation systems (like Distil / Imperva/ Datadadome / CloudFlare IUAM)
+441 stars
from 12,454 · score 6.09
25.stretchr / testify
A toolkit with common assertions and mocks that plays nicely with the standard library
+435 stars
from 25,805 · score 6.08
26.robotframework / robotframework
Generic automation framework for acceptance testing and RPA
+431 stars
from 11,543 · score 6.07
27.chromedp / chromedp
A faster, simpler way to drive browsers supporting the Chrome DevTools Protocol.
+408 stars
from 12,938 · score 6.01
28.joke2k / faker
Faker is a Python package that generates fake data for you.
+387 stars
from 19,091 · score 5.96
29.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!
+386 stars
from 6,460 · score 5.96
30.pestphp / pest
The elegant testing framework for PHP developers and AI agents.
+381 stars
from 11,373 · score 5.95
31.jestjs / jest
Delightful JavaScript Testing.
+379 stars
from 45,092 · score 5.94
32.bats-core / bats-core
Bash Automated Testing System
+334 stars
from 6,002 · score 5.81
33.go-rod / rod
A Chrome DevTools Protocol driver for web automation and scraping.
+300 stars
from 6,843 · score 5.71
34.phpstan / phpstan
PHP Static Analysis Tool - discover bugs in your code without running it!
+270 stars
from 13,876 · score 5.60
35.FlaUI / FlaUI
UI automation library for .Net
+267 stars
from 2,924 · score 5.59
36.DeviceFarmer / stf
Control and manage Android devices from your browser.
+262 stars
from 4,373 · score 5.57
37.google / syzkaller
syzkaller is an unsupervised coverage-guided kernel fuzzer
+257 stars
from 6,129 · score 5.55
38.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.
+249 stars
from 1,037 · score 5.52
39.doctest / doctest
The fastest feature-rich C++11/14/17/20/23 single-header testing framework
+238 stars
from 6,664 · score 5.48
40.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.
+225 stars
from 4,795 · score 5.42
41.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! ⚡
+221 stars
from 989 · score 5.40
42.leancodepl / patrol
Flutter-first UI testing framework. Ready for action!
+212 stars
from 1,244 · score 5.36
43.microcks / microcks
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
+203 stars
from 1,870 · score 5.32
44.wix / Detox
Gray box end-to-end testing and automation framework for mobile apps
+201 stars
from 11,850 · score 5.31
45.karatelabs / karate
Test Automation Made Simple
+201 stars
from 8,801 · score 5.31
46.unionai-oss / pandera
A light-weight, flexible, and expressive statistical data testing library
+201 stars
from 4,306 · score 5.31
47.antonio-morales / Fuzzing101
An step by step fuzzing tutorial. A GitHub Security Lab initiative
+186 stars
from 3,740 · score 5.23
48.pointfreeco / swift-snapshot-testing
📸 Delightful Swift snapshot testing.
+185 stars
from 4,203 · score 5.23
49.abhivaikar / howtheytest
A collection of public resources about how software companies test their software
+178 stars
from 6,705 · score 5.19
50.alexei-led / pumba
Chaos testing, network emulation, and stress testing tool for containers
+174 stars
from 3,008 · score 5.16
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.
+172 stars
from 8,586 · score 5.15
52.testing-library / react-testing-library
🐐 Simple and complete React DOM testing utilities that encourage good testing practices.
+166 stars
from 19,510 · score 5.12
53.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.
+165 stars
from 8,946 · score 5.11
54.mxschmitt / awesome-playwright
A curated list of awesome tools, utils and projects using Playwright
+164 stars
from 1,439 · score 5.11
55.vitalets / playwright-bdd
BDD testing with Playwright runner
+163 stars
from 660 · score 5.10
56.TheJambo / awesome-testing
A curated list of testing resources
+159 stars
from 2,250 · score 5.08
57.postmanlabs / httpbin
HTTP Request & Response Service, written in Python + Flask.
+154 stars
from 13,487 · score 5.04
58.goldbergyoni / javascript-testing-best-practices
📗🌐 🚢 Comprehensive and exhaustive JavaScript & Node.js testing best practices (August 2025)
+153 stars
from 24,453 · score 5.04
59.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.
+149 stars
from 4,854 · score 5.01
60.mochajs / mocha
☕️ Classic, reliable, trusted test framework for Node.js and the browser
+130 stars
from 22,783 · score 4.88
61.goss-org / goss
Quick and Easy server testing/validation
+128 stars
from 5,872 · score 4.86
62.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.
+124 stars
from 2,509 · score 4.83
63.vektra / mockery
A mock code autogenerator for Go
+118 stars
from 7,057 · score 4.78
64.onsi / ginkgo
A Modern Testing Framework for Go
+117 stars
from 8,954 · score 4.77
65.nvim-java / nvim-java
Painless Java in Neovim
+117 stars
from 1,609 · score 4.77
66.pester / Pester
Pester is the ubiquitous test and mock framework for PowerShell.
+113 stars
from 3,259 · score 4.74
67.mockito / mockito
Most popular Mocking framework for unit tests written in Java
+111 stars
from 15,341 · score 4.72
68.fityanos / awesome-quality-assurance-roadmap
:books: The starting point of your career as a Software Quality Assurance Engineer | Quality Automation Engineer :books:
+110 stars
from 2,094 · score 4.71
69.kiwitcms / Kiwi
open source test management system with over 2 million downloads!
+105 stars
from 1,178 · score 4.66
70.gruntwork-io / terratest
Terratest is a Go library that makes it easier to write automated tests for your infrastructure code.
+103 stars
from 7,886 · score 4.64
71.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.
+100 stars
from 19,225 · score 4.62
72.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")
+96 stars
from 684 · score 4.57
73.pybuilder / pybuilder
Software build automation tool for Python.
+95 stars
from 1,971 · score 4.56
74.scanapi / scanapi
Automated Integration Testing and Live Documentation for your API
+95 stars
from 1,491 · score 4.56
75.tox-dev / tox
Command line driven CI frontend and development task automation tool.
+94 stars
from 3,885 · score 4.55
76.testcontainers / testcontainers-dotnet
A library to support tests with throwaway instances of Docker containers for all compatible .NET Standard versions.
+90 stars
from 4,282 · score 4.51
77.tarampampam / webhook-tester
🔭 Powerful tool for testing WebHooks and more
+89 stars
from 463 · score 4.50
78.lk-geimfari / mimesis
Mimesis is a Python library for generating fake but realistic data in multiple languages and locales.
+84 stars
from 4,782 · score 4.44
79.devpi / devpi
Python PyPi staging server and packaging, testing, release tool
+83 stars
from 1,166 · score 4.43
80.google / go-cmp
Package for comparing Go values in tests
+77 stars
from 4,605 · score 4.36
81.Wisser / Jailer
Database Subsetting and Relational Data Browsing Tool.
+77 stars
from 3,139 · score 4.36
82.padamson / playwright-rust
Rust language bindings for Microsoft Playwright
+74 stars
from 91 · score 4.32
83.ChangemakerStudios / Papercut-SMTP
Papercut SMTP -- The Simple Desktop Email Server
+71 stars
from 3,267 · score 4.28
84.react-cosmos / react-cosmos
Sandbox for developing and testing UI components in isolation
+70 stars
from 8,623 · score 4.26
85.cweill / gotests
Automatically generate Go test boilerplate from your source code.
+70 stars
from 5,270 · score 4.26
86.nut-tree / nut.js
Native UI testing / controlling with node
+70 stars
from 2,783 · score 4.26
87.datafaker-net / datafaker
Generating fake data for the JVM (Java, Kotlin, Groovy) has never been easier!
+70 stars
from 1,737 · score 4.26
88.kevin1024 / vcrpy
Automatically mock your HTTP interactions to simplify and speed up testing
+69 stars
from 2,953 · score 4.25
89.infection / infection
PHP Mutation Testing library
+69 stars
from 2,195 · score 4.25
90.shouldly / shouldly
Should testing for .NET—the way assertions should be!
+68 stars
from 3,357 · score 4.23
91.AnthonyLloyd / CsCheck
Random testing library for C#
+68 stars
from 202 · score 4.23
92.VerifyTests / Verify
Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.
+67 stars
from 3,406 · score 4.22
93.avajs / ava
Node.js test runner that lets you develop with confidence 🚀
+63 stars
from 20,764 · score 4.16
94.DATA-DOG / go-sqlmock
Sql mock driver for golang to test database interactions
+62 stars
from 6,511 · score 4.14
95.SpectoLabs / hoverfly
Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
+58 stars
from 2,475 · score 4.08
96.mccutchen / go-httpbin
A reasonably complete and well-tested golang port of httpbin, with zero dependencies outside the go stdlib.
+58 stars
from 834 · score 4.08
97.denji / awesome-http-benchmark
HTTP(S) benchmark tools, testing/debugging, & restAPI (RESTful)
+57 stars
from 3,732 · score 4.06
98.wntrblm / nox
Flexible test automation for Python
+57 stars
from 1,504 · score 4.06
99.qawolf / cli
QA Wolf from anywhere — your terminal, your CI, your AI agent.
+56 stars
from 3,402 · score 4.04
100.sqlancer / sqlancer
Automated testing to find logic and performance bugs in database systems
+55 stars
from 1,715 · score 4.03