1.floci-io / floci
Light, fluffy, and always free - The AWS Local Emulator alternative
+24,426 stars
from 4,322 · score 10.10
Trending repositories
Ranked by Attention Score: stars gained over the last 180 complete days
1–100 of 297 by Attention Score · May 8, 2026 – Nov 3, 2026 (UTC)
2.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
+2,671 stars
from 12,820 · score 7.89
3.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
+1,716 stars
from 49,301 · score 7.45
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
+1,560 stars
from 9,264 · score 7.35
+1,111 stars
from 15,871 · score 7.01
6.vitest-dev / vitest
Next generation testing framework powered by Vite.
+960 stars
from 16,369 · score 6.87
7.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
+936 stars
from 13,728 · score 6.84
8.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
+707 stars
from 12,516 · score 6.56
9.locustio / locust
Write scalable load tests in plain Python 🚗💨
- locust
- python
- load-testing
- performance-testing
- http
- benchmarking
- +5 more
+627 stars
from 27,632 · score 6.44
10.typicode / json-server
Get a full fake REST API with zero coding in less than 30 seconds (seriously)
+559 stars
from 75,175 · score 6.33
11.mswjs / msw
The industry standard for API mocking in JavaScript.
+527 stars
from 17,803 · score 6.27
12.Shopify / toxiproxy
:alarm_clock: :fire: A TCP proxy to simulate network and system conditions for chaos and resiliency testing
+505 stars
from 11,980 · score 6.23
13.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
+490 stars
from 10,165 · score 6.20
14.schemathesis / schemathesis
Catch API bugs before your users do
- hypothesis
- pytest
- swagger
- cli
- property-based-testing
- graphql
- +6 more
+487 stars
from 3,252 · score 6.19
15.stretchr / testify
A toolkit with common assertions and mocks that plays nicely with the standard library
+433 stars
from 25,809 · score 6.07
16.faker-ruby / faker
A library for generating fake data such as names, addresses, and phone numbers.
- fake
- ruby
+396 stars
from 11,552 · score 5.98
17.joke2k / faker
Faker is a Python package that generates fake data for you.
+385 stars
from 19,094 · score 5.96
18.pestphp / pest
The elegant testing framework for PHP developers and AI agents.
- php
- testing
- pest
- framework
+381 stars
from 11,375 · score 5.95
19.jestjs / jest
Delightful JavaScript Testing.
- javascript
- testing
- painless-javascript-testing
- immersive
- painless
- +3 more
+372 stars
from 45,098 · score 5.92
20.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
+341 stars
from 12,751 · score 5.83
+333 stars
from 6,006 · score 5.81
22.tsenart / vegeta
HTTP load testing tool and library. It's over 9000!
+331 stars
from 24,908 · score 5.81
+321 stars
from 15,879 · score 5.77
+291 stars
from 5,157 · score 5.68
25.mockoon / mockoon
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
+268 stars
from 8,200 · score 5.59
26.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
+248 stars
from 1,039 · score 5.52
27.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.
+247 stars
from 47,472 · score 5.51
28.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
+235 stars
from 6,667 · score 5.46
29.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
+223 stars
from 4,797 · score 5.41
30.karatelabs / karate
Test Automation Made Simple
- test-automation
- assertions
- testing-tools
- mock-server
- automated-testing
- webdriver
- +10 more
+202 stars
from 8,802 · score 5.31
31.wix / Detox
Gray box end-to-end testing and automation framework for mobile apps
- e2e-tests
- ios
- react-native
- android
- testing
- javascript
- +5 more
+200 stars
from 11,851 · score 5.30
32.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
+186 stars
from 221 · score 5.23
33.pointfreeco / swift-snapshot-testing
📸 Delightful Swift snapshot testing.
- swift
- testing
- snapshot-testing
- screenshot-testing
+185 stars
from 4,204 · score 5.23
34.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
+173 stars
from 8,586 · score 5.16
35.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
+172 stars
from 228 · score 5.15
36.testing-library / react-testing-library
🐐 Simple and complete React DOM testing utilities that encourage good testing practices.
+166 stars
from 19,512 · score 5.12
37.currents-dev / playwright-best-practices-skill
AI Skill for Playwright Best Practices—made by Currents.dev
- ai
- ai-skill
- ai-skills
- playwright
- playwright-typescript
+166 stars
from 250 · score 5.12
38.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.
+165 stars
from 6,878 · score 5.11
39.dotnet / BenchmarkDotNet
Powerful .NET library for benchmarking
- benchmark
- benchmarking
- c-sharp
- dotnet
- performance
- csharp
- +1 more
+164 stars
from 11,363 · score 5.11
40.vitalets / playwright-bdd
BDD testing with Playwright runner
- automated-testing
- bdd
- cucumber
- gherkin
- playwright
- testing
+162 stars
from 662 · score 5.09
41.webdriverio / webdriverio
Next-gen browser and mobile automation test framework for Node.js
- javascript
- webdriverio
- webdriver
- node
- test
- automation
- +6 more
+149 stars
from 9,720 · score 5.01
42.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.
+139 stars
from 7,331 · score 4.94
43.mochajs / mocha
☕️ Classic, reliable, trusted test framework for Node.js and the browser
+127 stars
from 22,784 · score 4.85
44.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.
+125 stars
from 2,509 · score 4.84
45.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
+125 stars
from 292 · score 4.84
46.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
+112 stars
from 14,298 · score 4.73
47.onsi / ginkgo
A Modern Testing Framework for Go
+112 stars
from 8,957 · score 4.73
48.codesenberg / bombardier
Fast cross-platform HTTP benchmarking tool written in Go
- fast
- http
- cli
- benchmarking
- bombardier
- go
- +6 more
+110 stars
from 6,740 · score 4.71
49.mockito / mockito
Most popular Mocking framework for unit tests written in Java
- mockito
- java
- mocking-framework
- testing-tools
- mocking
- mock
- +6 more
+108 stars
from 15,341 · score 4.69
50.Redocly / redocly-cli
⚒️ Redocly CLI makes OpenAPI easy. Lint/validate to any standard, generate beautiful docs, and more.
+107 stars
from 1,437 · score 4.68
51.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
+102 stars
from 153 · score 4.63
52.hagopj13 / node-express-boilerplate
A boilerplate for building production-ready RESTful APIs using Node.js, Express, and Mongoose
+99 stars
from 7,567 · score 4.61
53.scanapi / scanapi
Automated Integration Testing and Live Documentation for your API
- python3
- python-package
- pypi-packages
- scanapi
- yaml
- json
- +6 more
+93 stars
from 1,493 · score 4.54
54.brianvoe / gofakeit
Random fake data generator written in go
- go
- data
- generator
- random
- fake
- golang
- +1 more
+91 stars
from 5,322 · score 4.52
55.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
+91 stars
from 4,282 · score 4.52
56.tox-dev / tox
Command line driven CI frontend and development task automation tool.
- testing
- python
- virtualenv
- continuous-integration
- cli
- automation
- +2 more
+91 stars
from 3,886 · score 4.52
57.tarampampam / webhook-tester
🔭 Powerful tool for testing WebHooks and more
+89 stars
from 463 · score 4.50
+87 stars
from 2,604 · score 4.48
59.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
+84 stars
from 4,781 · score 4.44
60.garris / BackstopJS
Catch CSS curve balls.
- javascript
- screen-capture
- chrome-headless
- backstopjs
- visual-regression-tests
+83 stars
from 7,112 · score 4.43
61.DemchaAV / GraphCompose
Declarative Java engine for structured documents. Automatic layout, pagination, reusable templates and themes. Render print-ready PDF, export editable PowerPoint, or generate semantic DOCX.
- document-generation
- java
- layout-engine
- report-generation
- template-engine
- +14 more
+78 stars
from 41 · score 4.37
62.nock / nock
HTTP server mocking and expectations library for Node.js
+74 stars
from 13,061 · score 4.32
63.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.
+71 stars
from 2,893 · score 4.28
64.react-cosmos / react-cosmos
Sandbox for developing and testing UI components in isolation
+68 stars
from 8,626 · score 4.23
+68 stars
from 6,346 · score 4.23
66.kevin1024 / vcrpy
Automatically mock your HTTP interactions to simplify and speed up testing
+68 stars
from 2,954 · score 4.23
67.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
+68 stars
from 1,683 · score 4.23
68.litestar-org / polyfactory
Simple and powerful factories for mock data generation
- pydantic
- python
- dataclasses
- starlite
- hacktoberfest
- typeddict
- +6 more
+68 stars
from 1,453 · score 4.23
69.VerifyTests / Verify
Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.
- snapshot-testing
- testing
- assertion-library
- snapshot
+67 stars
from 3,406 · score 4.22
70.oguimbal / pg-mem
An in memory postgres DB instance for your unit tests
- hacktoberfest
- pg-promise
- typeorm
- node-postgres
- pg-mem
- postgresql
- +9 more
+65 stars
from 2,313 · score 4.19
71.avajs / ava
Node.js test runner that lets you develop with confidence 🚀
- test-runner
- ava
- javascript
- concurrency
- async-functions
- tap
- +12 more
+63 stars
from 20,765 · score 4.16
72.mccutchen / go-httpbin
A reasonably complete and well-tested golang port of httpbin, with zero dependencies outside the go stdlib.
+59 stars
from 834 · score 4.09
73.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
+57 stars
from 25 · score 4.06
+56 stars
from 2,462 · score 4.04
75.sqlancer / sqlancer
Automated testing to find logic and performance bugs in database systems
+56 stars
from 1,715 · score 4.04
76.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
+55 stars
from 4,871 · score 4.03
77.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
+55 stars
from 1,002 · score 4.03
78.sj26 / mailcatcher
Catches mail and serves it through a dream.
+52 stars
from 6,731 · score 3.97
+50 stars
from 10,124 · score 3.93
80.nalexn / ViewInspector
Runtime introspection and unit testing of SwiftUI views
- swiftui
- swiftui-views
- unit-testing
- runtime-typechecking
- best-practices
- swift
- +1 more
+49 stars
from 2,589 · score 3.91
81.wemake-services / wemake-django-template
Bleeding edge django template focused on code quality and security.
+48 stars
from 2,233 · score 3.89
+48 stars
from 1,599 · score 3.89
83.codeceptjs / CodeceptJS
Supercharged End 2 End Testing Framework for NodeJS
- codeceptjs
- webdriverio
- selenium-webdriver
- acceptance-testing
- end-to-end-testing
- nodejs
- +11 more
+47 stars
from 4,203 · score 3.87
84.coverlet-coverage / coverlet
Cross platform code coverage for .NET
- code-coverage
- dotnet-core
- unittest
- coverage
- cross-platform
- coverage-library
- +4 more
+46 stars
from 3,135 · score 3.85
+46 stars
from 2,792 · score 3.85
86.nst / JSONTestSuite
A comprehensive test suite for RFC 8259 compliant JSON parsers
+44 stars
from 1,133 · score 3.81
87.reg-viz / reg-suit
:recycle: Visual Regression Testing tool
- visual-tests
- nodejs
- regression-testing
- automation-tests
- reg-suit
+43 stars
from 1,263 · score 3.78
88.jasmine / jasmine
Simple JavaScript testing framework for browsers and node.js
+42 stars
from 15,768 · score 3.76
89.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
+41 stars
from 11,913 · score 3.74
90.newsapps / beeswithmachineguns
A utility for arming (creating) many bees (micro EC2 instances) to attack (load test) targets (web applications).
+41 stars
from 6,595 · score 3.74
91.dokimos-dev / dokimos
LLM and agent evaluation for Java & Kotlin. Runs in JUnit and CI. Spring AI, LangChain4j, Koog, Embabel, and any LLM client.
- agent-evaluation
- evaluation-framework
- evaluation-metrics
- java
- langchain4j
- llm-evaluation
- +14 more
+41 stars
from 20 · score 3.74
92.fzaninotto / FakerArchived
Faker is a PHP library that generates fake data for you
+39 stars
from 26,576 · score 3.69
93.thoughtbot / factory_bot
A library for setting up Ruby objects as test data.
- factory-girl
- ruby
- thoughtbot
- rubygems
- testing
- fixtures
- +3 more
+39 stars
from 8,128 · score 3.69
94.FactoryBoy / factory_boy
A test fixtures replacement for Python
- hacktoberfest
- django
- sqlalchemy
- python
- testing
- fixtures
+37 stars
from 3,774 · score 3.64
95.shellspec / shellspec
A full-featured BDD unit testing framework for bash, ksh, zsh, dash and all POSIX shells
+37 stars
from 1,366 · score 3.64
96.rubycdp / cuprite
Headless Chrome/Chromium driver for Capybara
+36 stars
from 1,362 · score 3.61
+36 stars
from 1,009 · score 3.61
98.Data-Centric-AI-Community / fg-data-synthetic
Synthetic data generators for tabular and time-series data
- gan-architectures
- gan
- deep-learning
- synthetic-data
- tensorflow2
- machine-learning
- +9 more
+35 stars
from 1,627 · score 3.58
+34 stars
from 5,242 · score 3.56
100.phpbench / phpbench
PHP Benchmarking framework
- benchmark-framework
- benchmarking
- performance
- performance-testing
+34 stars
from 1,994 · score 3.56