Trending repositories

1.floci-io / floci

Light, fluffy, and always free - The AWS Local Emulator alternative

• aws
• aws-emulation
• localstack
• devops
• docker
• ec2
• +4 more

2.microsoft / playwright

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

• playwright
• testing
• automation
• webkit
• firefox
• e2e-testing
• +9 more

3.jo-duchan / tapflow

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

• appetize-alternative
• android
• ios
• react-native
• android-emulator
• app-testing
• +14 more

4.keploy / keploy

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

• testing
• test-automation
• api-testing
• testing-tools
• test-automation-framework
• test-generation
• +8 more

5.mobile-dev-inc / Maestro

Painless E2E Automation for Mobile and Web

• android
• ios
• blackbox-testing
• ui-automation

6.web-infra-dev / midscene

See interfaces like a human. E2E testing in natural language.

• testing
• browser-use
• computer-use
• gpt-operator
• javascript
• phone-use
• +2 more

7.grafana / k6

A modern load testing tool, using Go and JavaScript

• golang
• load-testing
• load-generator
• javascript
• es6
• performance
• +3 more

8.google / googletest

GoogleTest - Google Testing and Mocking Framework

9.axllent / mailpit

An email and SMTP testing tool with API for developers

• email-testing
• go
• golang
• smtp-server
• smtp-relay
• smtp-testing
• +2 more

10.vostride / agent-qa

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.

• playwright
• end-to-end-testing
• ai-testing
• ai-agents
• mcp
• developer-tools
• +14 more

11.sharkdp / hyperfine

A command-line benchmarking tool

• command-line
• tool
• benchmark
• rust
• cli
• terminal

12.rakyll / hey

HTTP load generator, ApacheBench (ab) replacement

13.ffuf / ffuf

Fast web fuzzer written in Go

• fuzzer
• pentesting
• infosec
• web

14.vitest-dev / vitest

Next generation testing framework powered by Vite.

• vite
• test
• testing-tools

15.google / oss-fuzz

OSS-Fuzz - continuous fuzzing for open source software.

• fuzzing
• security
• stability
• oss-fuzz
• fuzz-testing
• vulnerabilities

16.appium / appium

Cross-platform automation framework for all kinds of apps, built on top of the W3C WebDriver protocol

• appium
• webdriver
• android
• ios
• windows
• automation
• +2 more

17.seleniumbase / SeleniumBase

📊 APIs for Web Scraping, Browser Automation, and E2E Testing. CDP Mode & Stealthy Playwright Mode bypass bot-detection/CAPTCHAs.

• python
• selenium-python
• e2e-testing
• seleniumbase
• web-automation
• pytest
• +10 more

18.dequelabs / axe-core

Accessibility engine for automated Web UI testing

• axe
• a11y
• accessibility

19.stryker-mutator / stryker-js

Mutation testing for JavaScript and friends

• mutation-testing
• stryker
• javascript
• typescript
• testing-tools
• test-automation
• +2 more

20.cypress-io / cypress

Fast, easy and reliable testing for anything that runs in a browser.

• cypress
• end-to-end-testing
• angular-testing-library
• component-testing
• cypress-cloud
• cypress-schematic
• +7 more

21.pytest-dev / pytest

The pytest framework makes it easy to write small tests, yet scales to support complex functional testing

• unit-testing
• test
• testing
• python
• hacktoberfest

22.HypothesisWorks / hypothesis

The property-based testing library for Python

• python
• testing
• fuzzing
• property-based-testing

23.web-platform-tests / wpt

Test suites for Web platform specs — including WHATWG, W3C, and others

• testing
• html
• test-automation
• browser
• w3c
• whatwg
• +13 more

24.hyhmrright / brooks-lint

Portable AI code quality reviews for Codex, Cursor, Copilot and other coding agents: six Agent Skills for architecture, technical debt, tests and remediation.

• architecture-review
• code-quality
• code-review
• tech-debt
• claude-code-plugin
• clean-architecture
• +14 more

25.locustio / locust

Write scalable load tests in plain Python 🚗💨

• locust
• python
• load-testing
• performance-testing
• http
• benchmarking
• +5 more

26.Shopify / toxiproxy

:alarm_clock: :fire: A TCP proxy to simulate network and system conditions for chaos and resiliency testing

• resiliency
• tcp-proxy
• go
• proxy
• chaos
• testing
• +3 more

27.faiscadev / fakecloud

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.

• aws
• aws-emulator
• aws-testing
• dynamodb
• integration-testing
• lambda
• +14 more

28.mswjs / msw

The industry standard for API mocking in JavaScript.

• msw
• mock
• mocking-framework
• service-worker
• mock-service-worker
• mocking
• +5 more

29.schemathesis / schemathesis

Catch API bugs before your users do

• hypothesis
• pytest
• swagger
• cli
• property-based-testing
• graphql
• +6 more

30.metersphere / metersphere

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.

• jmeter
• testing
• test-automation
• api-testing
• testcase
• testlink
• +5 more

31.Orange-OpenSource / hurl

Hurl, run and test HTTP requests with plain text.

• curl
• http
• testing-tools
• cli
• integration-testing
• http-client
• +2 more

32.hatoo / oha

TranslatedOhayou (おはよう, "good morning"), HTTP load generator, inspired by rakyll/hey with tui animation.

• rust
• load-testing
• benchmark
• http
• load-generator
• command-line
• +3 more

33.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)

• testing
• test-framework
• tdd
• bdd
• no-dependencies
• framework
• +2 more

34.typicode / json-server

Get a full fake REST API with zero coding in less than 30 seconds (seriously)

• api
• fake
• frontend
• json
• mock
• rest
• +1 more

35.robotframework / robotframework

Generic automation framework for acceptance testing and RPA

• robotframework
• testing
• automation
• testautomation
• attd
• bdd
• +2 more

36.google / benchmark

A microbenchmark support library

• benchmark

37.joke2k / faker

Faker is a Python package that generates fake data for you.

• python
• fake
• testing
• dataset
• fake-data
• test-data
• +3 more

38.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!

• afl
• afl-fuzz
• afl-fuzzer
• fuzzing
• fuzzer
• fuzz-testing
• +9 more

39.s0md3v / XSStrike

Most advanced XSS scanner.

• xss
• xss-scanner
• xss-exploit
• xss-bruteforce
• xss-python
• xss-detection
• +2 more

40.stretchr / testify

A toolkit with common assertions and mocks that plays nicely with the standard library

• testify
• go
• assertions
• mocking
• golang
• testing
• +1 more

41.synthetichealth / synthea

Synthetic Patient Population Simulator

• synthea
• synthetic-data
• synthetic-population
• fhir
• health-data
• simulation

42.pestphp / pest

The elegant testing framework for PHP developers and AI agents.

• php
• testing
• pest
• framework

43.bats-core / bats-core

Bash Automated Testing System

• shell
• bash
• testing
• bats
• tap
• testing-tools
• +2 more

44.tsenart / vegeta

HTTP load testing tool and library. It's over 9000!

• load-testing
• go
• benchmarking
• http

45.bruin-data / bruin

Build data pipelines with SQL and Python, ingest data from different sources, add quality checks, and build end-to-end flows.

• analytics
• bigquery
• data-modeling
• data-pipelines
• python
• snowflake
• +5 more

46.jestjs / jest

Delightful JavaScript Testing.

• javascript
• testing
• painless-javascript-testing
• facebook
• immersive
• painless
• +3 more

47.faker-js / faker

Generate massive amounts of fake data in the browser and node.js

• faker
• data
• fake
• nodejs
• browser
• javascript
• +1 more

48.getmoto / moto

A library that allows you to easily mock out tests based on AWS infrastructure.

• boto
• aws
• ec2
• s3

49.mailhog / MailHog

Web and API based SMTP testing

50.mockoon / mockoon

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

• mock
• server
• rest-api
• rest
• application
• electron
• +12 more

51.wg / wrk

Modern HTTP benchmarking tool

52.ixartz / Next-js-Boilerplate

🚀🎉📚 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 ✨

• nextjs
• next-theme
• next-js
• starter-kit
• starter-template
• starter-project
• +14 more

53.bountyyfi / lonkero

Lonkero - Wraps around your attack surface. Professional-grade scanner for real penetration testing. Fast. Modular. Rust.

• cve-scanning
• pentesting-tools
• rust
• vulnerability-scanners
• websecurity
• appsec
• +14 more

54.apache / jmeter

Apache JMeter open-source load testing tool for analyzing and measuring the performance of a variety of services

• java
• performance
• test

55.ThrowTheSwitch / Unity

Simple unit testing for C

• c
• unit-testing

56.ai / size-limit

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.

57.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! ⚡

• ai
• autogen
• automation
• browser
• end-to-end-testing
• hercules
• +12 more

58.karatelabs / karate

Test Automation Made Simple

• test-automation
• assertions
• testing-tools
• mock-server
• automated-testing
• webdriver
• +10 more

59.bitwes / Gut

Godot Unit Test. Unit testing tool for Godot Game Engine.

• godot
• unit-test
• godot-engine
• tool

60.wiremock / wiremock

A tool for mocking HTTP services

• wiremock
• json
• mocking
• stubbing
• java
• xml
• +5 more

61.GoogleChrome / lighthouse-ci

Automate running Lighthouse for every commit, viewing the changes, and preventing regressions

• lighthouse
• webperf

62.TNG / ArchUnit

A Java architecture test library, to specify and assert architecture rules in plain Java

63.axboe / fio

Flexible I/O Tester

64.google / syzkaller

syzkaller is an unsupervised coverage-guided kernel fuzzer

• linux
• kernel
• fuzz-testing
• fuzzing
• fuzzer
• testing
• +3 more

65.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.

• test-automation
• testing
• testing-tools
• unit-test
• unittest
• unittest-framework
• +6 more

66.jepsen-io / jepsen

A framework for distributed systems verification, with fault injection

67.minimaxir / big-list-of-naughty-strings

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.

68.testing-library / react-testing-library

🐐 Simple and complete React DOM testing utilities that encourage good testing practices.

• reactjs
• testing
• javascript

69.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.

• testing
• docker
• automation
• golang
• go
• testcontainers-go
• +2 more

70.webdriverio / webdriverio

Next-gen browser and mobile automation test framework for Node.js

• javascript
• webdriverio
• webdriver
• node
• test
• automation
• +6 more

71.alexei-led / pumba

Chaos testing, network emulation, and stress testing tool for containers

• docker
• chaos
• network-emulator
• testing-tools
• testing
• chaos-monkey
• +11 more

72.pointfreeco / swift-snapshot-testing

📸 Delightful Swift snapshot testing.

• swift
• testing
• snapshot-testing
• screenshot-testing

73.doctest / doctest

The fastest feature-rich C++11/14/17/20/23 single-header testing framework

• c-plus-plus
• doctest
• tdd
• testing
• unit-testing
• header-only
• +8 more

74.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.

• serverless
• load
• api
• playwright
• stress
• testing
• +14 more

75.stryker-mutator / stryker-net

Mutation testing for .NET core and .NET framework!

• mutation-testing
• stryker
• dotnet-core
• dotnet-framework
• hacktoberfest
• dotnet-stryker

76.dotnet / BenchmarkDotNet

Powerful .NET library for benchmarking

• benchmark
• benchmarking
• c-sharp
• dotnet
• performance
• csharp
• +1 more

77.stoplightio / prism

Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.

• oas
• prism
• mocking
• api-testing
• http-proxy
• swagger
• +9 more

78.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.

• java
• docker
• docker-compose
• junit
• test-automation
• jvm
• +3 more

79.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.

• mock-server
• proxy
• java-client
• javascript-client
• node-module
• node-client
• +9 more

80.vitalets / playwright-bdd

BDD testing with Playwright runner

• automated-testing
• bdd
• cucumber
• gherkin
• playwright
• testing

81.microcks / microcks

The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀

• api
• testing
• kubernetes
• api-testing
• event-driven
• graphql
• +14 more

82.wix / Detox

Gray box end-to-end testing and automation framework for mobile apps

• e2e-tests
• ios
• react-native
• android
• testing
• javascript
• +5 more

83.sebastianbergmann / phpunit

The PHP Unit Testing framework.

• php
• phpunit
• testing-tools

84.goss-org / goss

Quick and Easy server testing/validation

• goss
• health-endpoint
• devops
• tdd
• tdd-utilities
• testing
• +11 more

85.GreenmaskIO / greenmask

Database anonymization and test data management

• golang
• obfuscation
• postgresql
• security
• security-tools
• anonymization
• +14 more

86.leancodepl / patrol

Flutter-first UI testing framework. Ready for action!

• dart
• flutter
• integration-testing
• testing
• flutter-test
• greybox-testing
• +3 more

87.currents-dev / playwright-best-practices-skill

AI Skill for Playwright Best Practices—made by Currents.dev

• ai
• ai-skill
• ai-skills
• playwright
• playwright-typescript

88.tox-dev / tox

Command line driven CI frontend and development task automation tool.

• testing
• python
• virtualenv
• continuous-integration
• cli
• automation
• +2 more

89.pester / Pester

Pester is the ubiquitous test and mock framework for PowerShell.

• powershell
• pester-tests
• powershell-tests
• assertions
• mocking
• mock
• +5 more

90.mochajs / mocha

☕️ Classic, reliable, trusted test framework for Node.js and the browser

• mocha
• javascript
• testing
• tdd
• bdd
• browser
• +6 more

91.testdino-hq / playwright-skill

TestDino Playwright Skill: AI-powered guides for Playwright best practices, made by testdino.com.

• ai
• ai-skills
• antigravity-skills
• claude-skills
• codex-skills
• cursor-skills
• +7 more

92.akopytov / sysbench

Scriptable database and system performance benchmark

• benchmark
• mysql
• postgresql
• lua
• luajit
• console
• +6 more

93.ai-dashboad / flutter-skill

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.

• ai
• android
• automation
• claude
• cursor
• e2e-testing
• +14 more

94.postmanlabs / httpbin

HTTP Request & Response Service, written in Python + Flask.

• http
• http-server
• testing
• service
• api
• json
• +2 more

95.mxschmitt / awesome-playwright

A curated list of awesome tools, utils and projects using Playwright

• playwright
• testing
• awesome-list
• awesome
• puppeteer
• tests
• +1 more

96.kiwitcms / Kiwi

open source test management system with over 2 million downloads!

• testing
• testing-tools
• management
• qa-team
• qa
• qatools
• +2 more

97.AnthonyLloyd / CsCheck

Random testing library for C#

• quickcheck
• testing
• random
• regression-testing
• performance-testing
• concurrency-testing
• +6 more

98.Blazity / next-enterprise

💼 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.

• boilerplate
• chatgpt
• cva
• eslint
• jamstack
• javascript-ai
• +14 more

99.gruntwork-io / terratest

Terratest is a Go library that makes it easier to write automated tests for your infrastructure code.

• devops
• testing
• testing-library
• aws
• terraform
• packer
• +2 more

100.gskinner / regexr

RegExr is a HTML/JS based tool for creating, testing, and learning about Regular Expressions.