1.floci-io / floci
Light, fluffy, and always free - The AWS Local Emulator alternative
+10,628 stars
from 18,120 · score 9.27
Trending repositories
Ranked by Attention Score: stars gained over the last 90 complete days
1–100 of 312 by Attention Score · Aug 6, 2026 – Nov 3, 2026 (UTC)
2.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
+1,292 stars
from 287 · score 7.16
3.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
+1,058 stars
from 14,433 · score 6.97
4.axllent / mailpit
An email and SMTP testing tool with API for developers
- email-testing
- go
- golang
- smtp-server
- smtp-relay
- smtp-testing
- +2 more
+809 stars
from 10,015 · score 6.70
+567 stars
from 16,415 · score 6.34
6.vitest-dev / vitest
Next generation testing framework powered by Vite.
+470 stars
from 16,859 · score 6.15
7.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
+398 stars
from 12,825 · score 5.99
8.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
+327 stars
from 50,690 · score 5.79
9.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
+324 stars
from 14,340 · score 5.78
10.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
+282 stars
from 1,275 · score 5.65
11.locustio / locust
Write scalable load tests in plain Python 🚗💨
- locust
- python
- load-testing
- performance-testing
- http
- benchmarking
- +5 more
+281 stars
from 27,978 · score 5.64
12.Shopify / toxiproxy
:alarm_clock: :fire: A TCP proxy to simulate network and system conditions for chaos and resiliency testing
+279 stars
from 12,206 · score 5.63
13.mswjs / msw
The industry standard for API mocking in JavaScript.
+254 stars
from 18,076 · score 5.54
14.schemathesis / schemathesis
Catch API bugs before your users do
- hypothesis
- pytest
- swagger
- cli
- property-based-testing
- graphql
- +6 more
+242 stars
from 3,497 · score 5.49
15.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
+225 stars
from 10,430 · score 5.42
16.typicode / json-server
Get a full fake REST API with zero coding in less than 30 seconds (seriously)
+214 stars
from 75,520 · score 5.37
17.joke2k / faker
Faker is a Python package that generates fake data for you.
+184 stars
from 19,295 · score 5.22
18.stretchr / testify
A toolkit with common assertions and mocks that plays nicely with the standard library
+173 stars
from 26,069 · score 5.16
19.pestphp / pest
The elegant testing framework for PHP developers and AI agents.
- php
- testing
- pest
- framework
+167 stars
from 11,589 · score 5.12
+164 stars
from 6,175 · score 5.11
21.tsenart / vegeta
HTTP load testing tool and library. It's over 9000!
+153 stars
from 25,086 · score 5.04
22.jestjs / jest
Delightful JavaScript Testing.
- javascript
- testing
- painless-javascript-testing
- immersive
- painless
- +3 more
+148 stars
from 45,322 · score 5.00
+136 stars
from 16,064 · score 4.92
24.mockoon / mockoon
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
+136 stars
from 8,332 · score 4.92
25.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
+130 stars
from 12,962 · score 4.88
+124 stars
from 5,324 · score 4.83
27.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.
+121 stars
from 6,922 · score 4.80
28.karatelabs / karate
Test Automation Made Simple
- test-automation
- assertions
- testing-tools
- mock-server
- automated-testing
- webdriver
- +10 more
+112 stars
from 8,892 · score 4.73
29.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
+106 stars
from 1,181 · score 4.67
30.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.
+95 stars
from 47,624 · score 4.56
31.testing-library / react-testing-library
🐐 Simple and complete React DOM testing utilities that encourage good testing practices.
+91 stars
from 19,587 · score 4.52
32.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
+91 stars
from 4,929 · score 4.52
33.webdriverio / webdriverio
Next-gen browser and mobile automation test framework for Node.js
- javascript
- webdriverio
- webdriver
- node
- test
- automation
- +6 more
+90 stars
from 9,779 · score 4.51
34.pointfreeco / swift-snapshot-testing
📸 Delightful Swift snapshot testing.
- swift
- testing
- snapshot-testing
- screenshot-testing
+88 stars
from 4,301 · score 4.49
35.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
+86 stars
from 6,816 · score 4.47
36.dotnet / BenchmarkDotNet
Powerful .NET library for benchmarking
- benchmark
- benchmarking
- c-sharp
- dotnet
- performance
- csharp
- +1 more
+81 stars
from 11,446 · score 4.41
37.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 stars
from 8,680 · score 4.38
38.vitalets / playwright-bdd
BDD testing with Playwright runner
- automated-testing
- bdd
- cucumber
- gherkin
- playwright
- testing
+76 stars
from 748 · score 4.34
39.wix / Detox
Gray box end-to-end testing and automation framework for mobile apps
- e2e-tests
- ios
- react-native
- android
- testing
- javascript
- +5 more
+74 stars
from 11,977 · score 4.32
40.currents-dev / playwright-best-practices-skill
AI Skill for Playwright Best Practices—made by Currents.dev
- ai
- ai-skill
- ai-skills
- playwright
- playwright-typescript
+70 stars
from 346 · score 4.26
41.tox-dev / tox
Command line driven CI frontend and development task automation tool.
- testing
- python
- virtualenv
- continuous-integration
- cli
- automation
- +2 more
+67 stars
from 3,910 · score 4.22
42.mochajs / mocha
☕️ Classic, reliable, trusted test framework for Node.js and the browser
+65 stars
from 22,846 · score 4.19
43.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
+65 stars
from 342 · score 4.19
44.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
+64 stars
from 336 · score 4.17
45.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.
+60 stars
from 7,410 · score 4.11
46.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 2,580 · score 4.01
47.techinz / browsers-benchmark
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.
- anti-detect
- antidetect-browser
- automation
- browser
- captcha
- patchright
- +4 more
+54 stars
from 363 · score 4.01
48.playwright-php / playwright
Playwright PHP library for browser automation: navigation, E2E tests, assertions, screenshots, and so much more!
- browser
- browser-automation
- php
- php-browser
- phpunit
- playwright
- +7 more
+52 stars
from 203 · score 3.97
49.brianvoe / gofakeit
Random fake data generator written in go
- go
- data
- generator
- random
- fake
- golang
- +1 more
+51 stars
from 5,362 · score 3.95
50.codesenberg / bombardier
Fast cross-platform HTTP benchmarking tool written in Go
- fast
- http
- cli
- benchmarking
- bombardier
- go
- +6 more
+49 stars
from 6,801 · score 3.91
51.forwardemail / supertest
🕷 Super-agent driven library for testing node.js HTTP servers using a fluent API. Maintained for @forwardemail, @ladjs, @spamscanner, @breejs, @cabinjs, and @lassjs.
- supertest
- superagent
- assertions
- node
+48 stars
from 14,362 · score 3.89
52.hagopj13 / node-express-boilerplate
A boilerplate for building production-ready RESTful APIs using Node.js, Express, and Mongoose
+48 stars
from 7,618 · score 3.89
53.onsi / ginkgo
A Modern Testing Framework for Go
+47 stars
from 9,022 · score 3.87
+45 stars
from 2,646 · score 3.83
55.lk-geimfari / mimesis
Mimesis is a Python library for generating fake but realistic data in multiple languages and locales.
- mimesis
- fake
- data
- generator
- fixtures
- dummy
- +14 more
+44 stars
from 4,821 · score 3.81
56.kevin1024 / vcrpy
Automatically mock your HTTP interactions to simplify and speed up testing
+44 stars
from 2,978 · score 3.81
57.mockito / mockito
Most popular Mocking framework for unit tests written in Java
- mockito
- java
- mocking-framework
- testing-tools
- mocking
- mock
- +6 more
+43 stars
from 15,406 · score 3.78
58.faker-ruby / faker
A library for generating fake data such as names, addresses, and phone numbers.
- fake
- ruby
+43 stars
from 11,905 · score 3.78
59.testcontainers / testcontainers-dotnet
A library to support tests with throwaway instances of Docker containers for all compatible .NET Standard versions.
- automation
- dotnet
- docker
- testcontainers
- hacktoberfest
- testcontainers-dotnet
- +1 more
+42 stars
from 4,331 · score 3.76
60.idan-rubin / browserclaw
The AI-native browser automation library. Snapshot + ref targeting — born from OpenClaw, built for agents, by agents.
- accessibility
- ai
- ai-agent
- browser-automation
- cdp
- chrome
- +6 more
+42 stars
from 40 · score 3.76
61.garris / BackstopJS
Catch CSS curve balls.
- javascript
- screen-capture
- chrome-headless
- backstopjs
- visual-regression-tests
+39 stars
from 7,156 · score 3.69
62.microsoft / restler-fuzzer
RESTler is the first stateful REST API fuzzing tool for automatically testing cloud services through their REST APIs and finding security and reliability bugs in these services.
+37 stars
from 2,927 · score 3.64
+37 stars
from 2,481 · score 3.64
64.martinus / nanobench
Simple, fast, accurate single-header microbenchmarking functionality for C++11/14/17/20
- benchmark
- cpp
- microbenchmark
- single-header
- single-header-lib
- single-file
- +2 more
+35 stars
from 1,716 · score 3.58
65.sqlancer / sqlancer
Automated testing to find logic and performance bugs in database systems
+34 stars
from 1,737 · score 3.56
66.nock / nock
HTTP server mocking and expectations library for Node.js
+32 stars
from 13,103 · score 3.50
67.codeceptjs / CodeceptJS
Supercharged End 2 End Testing Framework for NodeJS
- codeceptjs
- webdriverio
- selenium-webdriver
- acceptance-testing
- end-to-end-testing
- nodejs
- +11 more
+31 stars
from 4,219 · score 3.47
68.tarampampam / webhook-tester
🔭 Powerful tool for testing WebHooks and more
+31 stars
from 521 · score 3.47
69.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.
- dotnet
- microsoft
- mstest
- test
- test-framework
- tdd
- +10 more
+30 stars
from 1,027 · score 3.43
70.avajs / ava
Node.js test runner that lets you develop with confidence 🚀
- test-runner
- ava
- javascript
- concurrency
- async-functions
- tap
- +12 more
+29 stars
from 20,799 · score 3.40
71.react-cosmos / react-cosmos
Sandbox for developing and testing UI components in isolation
+29 stars
from 8,665 · score 3.40
72.VerifyTests / Verify
Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.
- snapshot-testing
- testing
- assertion-library
- snapshot
+28 stars
from 3,445 · score 3.37
+27 stars
from 6,387 · score 3.33
+26 stars
from 1,621 · score 3.30
75.litestar-org / polyfactory
Simple and powerful factories for mock data generation
- pydantic
- python
- dataclasses
- starlite
- hacktoberfest
- typeddict
- +6 more
+26 stars
from 1,495 · score 3.30
76.mccutchen / go-httpbin
A reasonably complete and well-tested golang port of httpbin, with zero dependencies outside the go stdlib.
+25 stars
from 868 · score 3.26
77.oguimbal / pg-mem
An in memory postgres DB instance for your unit tests
- hacktoberfest
- pg-promise
- typeorm
- node-postgres
- pg-mem
- postgresql
- +9 more
+24 stars
from 2,354 · score 3.22
+22 stars
from 10,152 · score 3.14
79.wemake-services / wemake-django-template
Bleeding edge django template focused on code quality and security.
+22 stars
from 2,259 · score 3.14
80.bitloops / ddd-hexagonal-cqrs-es-eda
Complete working example of using Domain Driven Design (DDD), Hexagonal Architecture, CQRS, Event Sourcing (ES), Event Driven Architecture (EDA), Behaviour Driven Development (BDD) using TypeScript and NestJS. Like what you see? Don't forget to star! ⭐ ^^^
- bdd
- cqrs
- ddd
- domain-driven-design
- event-sourcing
- hexagonal-architecture
- +9 more
+22 stars
from 1,429 · score 3.14
81.simplecov-ruby / simplecov
Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites
- ruby
- test-coverage
- code-quality
- rails
- coverage
- coverage-report
- +1 more
+21 stars
from 4,905 · score 3.09
82.carlosas / phpat
✔️ PHP Architecture Tester - Easy architecture testing for PHP
- php
- static-analysis
- testing
- architecture
- linter
- phpstan-extension
+21 stars
from 1,269 · score 3.09
83.sj26 / mailcatcher
Catches mail and serves it through a dream.
+20 stars
from 6,763 · score 3.04
84.newsapps / beeswithmachineguns
A utility for arming (creating) many bees (micro EC2 instances) to attack (load test) targets (web applications).
+20 stars
from 6,616 · score 3.04
85.reg-viz / reg-suit
:recycle: Visual Regression Testing tool
- visual-tests
- nodejs
- regression-testing
- automation-tests
- reg-suit
+20 stars
from 1,286 · score 3.04
86.coverlet-coverage / coverlet
Cross platform code coverage for .NET
- code-coverage
- dotnet-core
- unittest
- coverage
- cross-platform
- coverage-library
- +4 more
+18 stars
from 3,163 · score 2.94
87.nalexn / ViewInspector
Runtime introspection and unit testing of SwiftUI views
- swiftui
- swiftui-views
- unit-testing
- runtime-typechecking
- best-practices
- swift
- +1 more
+18 stars
from 2,620 · score 2.94
88.FakeItEasy / FakeItEasy
The easy mocking library for .NET
- mocking
- fake-objects
- dotnet
- dotnet-core
- hacktoberfest
+18 stars
from 1,836 · score 2.94
89.shellspec / shellspec
A full-featured BDD unit testing framework for bash, ksh, zsh, dash and all POSIX shells
+18 stars
from 1,385 · score 2.94
90.nightwatchjs / nightwatch
Integrated end-to-end testing framework written in Node.js and using W3C Webdriver API. Developed at @browserstack
- nightwatch
- javascript
- nodejs
- selenium
- webdriver
- end-to-end-testing
- +8 more
+17 stars
from 11,937 · score 2.89
91.bUnit-dev / bUnit
bUnit is a testing library for Blazor components that make tests look, feel, and runs like regular unit tests. bUnit makes it easy to render and control a component under test’s life-cycle, pass parameter and inject services into it, trigger event handlers, and verify the rendered markup from the component using a built-in semantic HTML comparer.
- razor-components
- unit-testing
- blazor
- blazor-components
- xunit
- nunit
- +8 more
+17 stars
from 1,293 · score 2.89
92.chaijs / chai
BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.
+16 stars
from 8,247 · score 2.83
93.FactoryBoy / factory_boy
A test fixtures replacement for Python
- hacktoberfest
- django
- sqlalchemy
- python
- testing
- fixtures
+16 stars
from 3,795 · score 2.83
94.nunit / nunit
NUnit Framework
- nunit-framework
- tdd
- testing
- test-framework
- test-driven-development
- dotnet
- +3 more
+16 stars
from 2,616 · score 2.83
95.phpbench / phpbench
PHP Benchmarking framework
- benchmark-framework
- benchmarking
- performance
- performance-testing
+15 stars
from 2,013 · score 2.77
96.online-judge-tools / oj
Tools for various online judges. Downloading sample cases, generating additional test cases, testing your code, and submitting it.
- competitive-programming
- automation
- scraping
- atcoder
- codeforces
- programming-contests
- +1 more
+15 stars
from 1,161 · score 2.77
97.gammasoft71 / xtd
Free open-source modern C++20/23 framework to create console (CLI), forms (GUI like WinForms) and unit test (xUnit) applications and libraries on Windows, macOS, Linux, iOS, Android, FreeBSD, Haiku, and SerenityOS.
+15 stars
from 1,154 · score 2.77
+15 stars
from 574 · score 2.77
99.arch-go / arch-go
Architecture checks for Go projects
- architecture
- go
- golang
- quality
- testing
- testing-automation
- +2 more
+15 stars
from 268 · score 2.77
100.jasmine / jasmine
Simple JavaScript testing framework for browsers and node.js
+14 stars
from 15,796 · score 2.71