Open-source testing software
1682 open-source libraries, tools and applications tagged testing, ranked by how closely testing is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
1682 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| lorisleiva/laravel-actions A Laravel package that lets developers encapsulate a single task in one PHP class and run it as a controller, job, event listener, command,… | 95 | 2872 | stable |
| ljlm0402/typescript-express-starter An interactive CLI generator that scaffolds production-ready TypeScript Express REST API projects with a configurable stack. It offers 10+ … | 85 | 2871 | active |
| beefytech/Beef Beef is an open-source, performance-oriented compiled programming language derived from C# syntax with C-style low-level control, bundled w… | 68 | 2870 | active |
| doctrine/data-fixtures Doctrine Data Fixtures is a PHP library for managing and loading data fixtures into databases via the Doctrine ORM or ODM. It provides a fi… | 84 | 2851 | stable |
| visa/visa-vulnerability-agentic-harness VVAH is Visa's open-source agentic harness for autonomous vulnerability discovery, remediation, and validation using frontier AI models. It… | 77 | 2830 | active |
| http4k http4k is a lightweight, functional HTTP toolkit for Kotlin where applications are just functions from Request to Response, with no annotat… | 95 | 2792 | stable |
| Pedestal Pedestal is a set of Clojure libraries for building server-side services, APIs, and web applications on the JVM. It provides an interceptor… | 65 | 2783 | active |
| Promptflow Prompt flow is a suite of Python SDK, CLI, and VS Code extension tools for the end-to-end development of LLM-based AI applications, linking… | 76 | 11254 | maintenance |
| golevelup/nestjs A monorepo of NestJS modules and utilities from golevelup, including RabbitMQ integration (RPC and pub/sub), Hasura event handlers, Stripe … | 94 | 2749 | active |
| mojolicious/mojo Mojolicious is a real-time web framework for Perl that supports MVC web applications, WebSockets, and non-blocking I/O with a built-in web … | 72 | 2747 | active |
| redbadger/crux Crux is a Rust framework for cross-platform app development that shares business logic in a single Rust core across iOS, Android, and web. … | 94 | 2741 | active |
| postgres-ai/database-lab-engine DBLab Engine is an open-source platform that provides instant, full-size thin clones and branching of PostgreSQL databases using ZFS copy-o… | 91 | 2720 | active |
| bcosca/fatfree Fat-Free Framework (F3) is a lightweight PHP micro-framework condensed into a single file for building dynamic web applications quickly. It… | 77 | 2716 | stable |
| Packet Sender Packet Sender is a free, open-source cross-platform utility for sending and receiving TCP, UDP, SSL, and DTLS packets, plus HTTP/HTTPS requ… | 83 | 2684 | active |
| Helvesec/rmux RMUX is a terminal multiplexer written in Rust that is tmux-compatible and natively supports Linux, macOS, and Windows (ConPTY). It ships t… | 73 | 2664 | active |
| Ericsson/codechecker CodeChecker is an analyzer tooling, defect database and viewer extension for static and dynamic analyzer tools like Clang Static Analyzer a… | 97 | 2630 | active |
| symfony/demo The official Symfony Demo Application, a reference blog-style application demonstrating how to build web apps following Symfony best practi… | 92 | 2620 | active |
| firecamp-dev/firecamp Firecamp is an open-source, developer-first API development platform for designing, testing, and documenting REST, GraphQL, WebSocket, and … | 48 | 2615 | active |
| google-coral/coralnpu Coral NPU is an open-source neural processing unit (NPU) hardware IP core from Google Research, built on the 32-bit RISC-V ISA with matrix,… | 72 | 2604 | active |
| apache/hamilton Apache Hamilton is a lightweight Python library for defining directed acyclic graphs (DAGs) of data transformations as plain, testable Pyth… | 89 | 2603 | active |
| friendlyanon/cmake-init cmake-init is an opinionated command-line tool that scaffolds modern CMake projects for executables, static/shared libraries, and header-on… | 61 | 2554 | active |
| kentcdodds/kentcdodds.com The open-source code behind Kent C. Dodds' personal website (kentcdodds.com), a blog and educational hub built with React Router v7, React,… | 77 | 2500 | active |
| find-sec-bugs/find-sec-bugs Find Security Bugs is a SpotBugs plugin that performs static security analysis of Java bytecode, detecting 144 vulnerability patterns inclu… | 52 | 2450 | active |
| Saloon Saloon is a PHP library for rapidly building third-party API integrations and SDKs using Connector and Request classes. It is framework-agn… | 96 | 2442 | active |
| DebugSwift/DebugSwift DebugSwift is an open-source, in-app debugging toolkit for iOS applications built in Swift. It provides a floating overlay inside the runni… | 91 | 2433 | active |
| coryhouse/react-slingshot React Slingshot is a comprehensive starter kit and boilerplate for building React + Redux single-page applications, bundling Babel, hot rel… | 23 | 9628 | maintenance |
| VeryGoodOpenSource/very_good_cli Very Good CLI is a Dart command-line tool by Very Good Ventures that scaffolds opinionated, production-ready project templates for Flutter … | 97 | 2424 | active |
| Prism Prism is a Laravel package providing a unified, fluent interface for working with Large Language Models across providers like OpenAI, Anthr… | 63 | 2423 | active |
| learnhouse/learnhouse LearnHouse is a next-generation open-source learning management system (LMS) for creating, sharing, and selling educational content. It com… | 100 | 2404 | active |
| torvalds/GuitarPedal A digital guitar pedal project by Linus Torvalds built around an RP2354A microcontroller and a TI audio codec, with seventeen software-defi… | 62 | 2394 | active |
| gookit/goutil goutil is a Go utility library providing 900+ helper functions across packages for strings, arrays, maps, structs, reflection, errors, time… | 95 | 2361 | active |
| QoderAI/better-harness Better Harness is an open-source Harness Engineering platform for coding agents that lets you define harnesses as code, run controlled expe… | 64 | 2333 | active |
| fcsonline/drill Drill is a lightweight HTTP load testing tool written in Rust, designed as a JVM-free alternative to tools like JMeter. Benchmark plans are… | 84 | 2311 | active |
| AgileBoot AgileBoot is a full-stack rapid development scaffold based on Spring Boot (backend) and Vue 3 + TypeScript (frontend), rebuilt from Ruoyi w… | 39 | 2309 | active |
| mattiasgustavsson/libs A collection of single-file, public domain (dual MIT) C/C++ libraries covering graphics app frameworks, data structures, threading, HTTP, a… | 57 | 2308 | active |
| allenymt/PrivacySentry PrivacySentry is an Android privacy compliance toolkit combining a Gradle plugin with a runtime SDK, using annotations plus ASM bytecode in… | 46 | 2288 | active |
| Transloco Transloco is an internationalization (i18n) library for Angular that lets you define translations in multiple languages and switch between … | 82 | 2284 | active |
| NEORV32 RISC-V Processor NEORV32 is a customizable 32-bit RISC-V soft-core CPU and microcontroller-like SoC written in platform-independent VHDL. It bundles the CPU… | 97 | 2283 | active |
| twitter/finatra Finatra is a lightweight Scala framework for building fast, testable HTTP and Thrift services on top of TwitterServer and Finagle. It provi… | 36 | 2274 | stable |
| paolosalvatori/ServiceBusExplorer Service Bus Explorer is a Windows desktop application for administering Azure Service Bus messaging entities such as queues, topics, subscr… | 91 | 2217 | active |
| joshuayoes/ios-simulator-mcp A Model Context Protocol (MCP) server that lets AI assistants interact with iOS simulators. It exposes tools for booting simulators, taking… | 80 | 2194 | active |
| Ibex RISC-V Core Ibex is a production-quality, open-source 32-bit RISC-V CPU core written in SystemVerilog, originally developed as 'Zero-riscy' in the PULP… | 77 | 2126 | active |
| OpenAutoCoder/Agentless Agentless is a Python framework that automatically solves software development problems (bug fixing) using LLMs without an agent loop. It f… | 15 | 2114 | active |
| itigges22/ATLAS ATLAS is a local-first coding agent that wraps compact open models with planning, candidate generation, quality scoring, sandboxed testing,… | 83 | 2106 | active |
| maxritter/pilot-shell Pilot Shell is a framework that adds spec-driven planning, enforced TDD, persistent memory, and automatic quality gates to Claude Code and … | 81 | 2097 | active |
| realworld-apps/aspnetcore-realworld-example-app An ASP.NET Core backend implementation of the RealWorld (Medium.com clone) spec, demonstrating CRUD, JWT authentication, pagination, and ve… | 74 | 2089 | active |
| Microcks Microcks is an open source, cloud native platform for API mocking and testing that turns OpenAPI, AsyncAPI, gRPC, GraphQL, Postman and Soap… | 96 | 2067 | active |
| A9T9/RPA Ui.Vision RPA is an open-source robotic process automation tool delivered as a browser extension for Chrome, Edge, and Firefox, compatible … | 94 | 2064 | active |
| rubycdp/ferrum Ferrum is a Ruby library providing a clean, high-level API to control Chrome or Chromium via the Chrome DevTools Protocol (CDP), with no Se… | 85 | 2055 | active |
| SpinalHDL SpinalHDL is an open-source Scala-based hardware description language (HDL) library for describing digital hardware at the register-transfe… | 87 | 2045 | active |
| jsdecena/laracom Laracom is a free, open-source e-commerce application built on the Laravel PHP framework, providing a storefront and admin panel with produ… | 77 | 2040 | active |
| Ruby LSP Ruby LSP is an opinionated implementation of the Language Server Protocol for Ruby, maintained by Shopify to provide rich editor features l… | 91 | 2036 | active |
| the-open-engine/zeroshot Zeroshot is a CLI tool that orchestrates independent executor–verifier agent loops for software changes, so the agent that writes code is n… | 80 | 2020 | active |
| deer-flow/llm-space LLM Space is a local-first desktop application for building, tracing, debugging, and evaluating LLM agents. It lets developers prototype ag… | 80 | 2010 | active |
| msoedov/agentic_security Agentic Security is an open-source LLM vulnerability scanner and AI red-teaming toolkit that probes large language models and agent workflo… | 83 | 2004 | active |
| INRIA/spoon Spoon is an open-source Java metaprogramming library that parses Java source code into a well-designed AST and provides powerful APIs for a… | 86 | 1959 | active |
| marmelab/json-graphql-server A Node.js tool that spins up a full fake GraphQL API from a JSON data file with zero coding in under 30 seconds. Inspired by json-server, i… | 89 | 1948 | active |
| gourouting/singo Singo is a Go starter framework that assembles Gin, GORM, Redis, sessions, CORS, i18n, and API testing into a simple single-service archite… | 67 | 1939 | active |
| FoalTS/foal Foal (FoalTS) is a full-featured, TypeScript-based Node.js web framework that bundles a CLI, ORM (TypeORM), authentication, testing tools, … | 88 | 1936 | active |
| stevearc/overseer.nvim overseer.nvim is a task runner and job management plugin for Neovim written in Lua. It lets users define, run, and monitor tasks (make, npm… | 66 | 1934 | active |
| fabric8io/docker-maven-plugin A Maven plugin for building Docker images and managing Docker containers directly from the Maven build lifecycle. It supports goals for bui… | 87 | 1931 | active |
| lmorg/murex Murex is a smarter shell and scripting language written in Go, with typed pipelines supporting JSON, YAML, XML, and CSV natively. It adds u… | 91 | 1925 | active |
| Zodios Zodios is a TypeScript REST API toolbox providing an end-to-end typesafe HTTP client (built on axios) and an optional Express-compatible se… | 67 | 1918 | active |
| yologdev/yoyo-evolve yoyo is an open-source terminal coding agent written in Rust that autonomously evolves its own source code — reading its code, planning imp… | 83 | 1917 | active |
| cortinico/kotlin-android-template A GitHub template repository for bootstrapping Android/Kotlin projects with a preconfigured Gradle Kotlin DSL build, sample app and library… | 76 | 1913 | active |
| ShenSeanChen/waku-agent Waku Agent is a local-first AI agent harness in Python that exposes the full agent stack — harness, loop, memory, and eval/LLM-Ops — as sma… | 79 | 1903 | active |
| codenameone/CodenameOne Codename One is an open-source framework that compiles a single Java (or Kotlin) codebase into native applications for iOS, Android, deskto… | 95 | 1885 | active |
| BDE (Basic Development Environment) BDE (Basic Development Environment) is Bloomberg's set of foundational C++ libraries, comprising BSL (Basic Standard Library), BDL (Basic D… | 76 | 1848 | stable |
| trezor/trezor-firmware The official open-source firmware monorepo for Trezor hardware wallets, containing firmware for Trezor One and Trezor T/Safe devices, a sta… | 76 | 1837 | active |
| lfb/nodejs-koa-blog A complete blog system built with Node.js and the Koa2 framework, providing REST API endpoints backed by MySQL, with companion Vue/Nuxt fro… | 32 | 1827 | active |
| lihongxun945/gobang A JavaScript Gomoku (five-in-a-row) AI built on minimax search with alpha-beta pruning, iterative deepening, Zobrist hashing, and other cla… | 75 | 1815 | active |
| inference-labs-inc/inference-network Inference Network is a Proof of Inference system built on EigenLayer that provides trustless verification of AI inference results via Solid… | 47 | 1814 | active |
| Todolist Web Application A Laravel 11 blog application demonstrating best practices and framework features such as authentication, APIs with Sanctum, broadcasting, … | 32 | 1793 | active |
| nccgroup/sobelow Sobelow is a security-focused static analysis tool for Elixir and the Phoenix framework, detecting common vulnerability classes like SQL in… | 23 | 1791 | active |
| metlo-labs/metlo Metlo is an open-source API security platform that inventories API endpoints, detects malicious traffic in real time, and can automatically… | 34 | 1789 | active |
| OpenAdaptAI/OpenAdapt OpenAdapt is a Python framework that compiles a demonstrated GUI workflow into an inspectable, deterministic, locally executable program fo… | 94 | 1784 | active |
| go-goyave/goyave Goyave is an opinionated, all-in-one Go web framework focused on building enterprise REST APIs with clean architecture, reliability, and de… | 98 | 1781 | active |
| PatilShreyas/NotyKT NotyKT is a full-stack Kotlin note-taking application combining a Ktor-based REST API backend with a modern Android client. It serves as a … | 54 | 1767 | active |
| j3ers3/Hello-Java-Sec A deliberately vulnerable Java Spring Boot application demonstrating common web vulnerabilities (SQLi, XSS, RCE, deserialization, SSTI, SSR… | 24 | 1767 | active |
| brainspec/enumerize A Ruby gem that adds enumerated attributes to Ruby classes with support for I18n translations and ORMs like ActiveRecord, Mongoid, MongoMap… | 62 | 1762 | active |
| BearStudio/start-ui-web Start UI [web] is an opinionated, full-stack React starter template maintained by BearStudio, bundling TanStack Start, Tailwind CSS, shadcn… | 76 | 1752 | active |
| microsoft/rnx-kit rnx-kit is a collection of React Native developer tools maintained by Microsoft, including an all-in-one CLI, dependency alignment (align-d… | 96 | 1739 | active |
| cleverhans-lab/cleverhans CleverHans is a Python library for benchmarking machine learning systems' vulnerability to adversarial examples, providing reference implem… | 23 | 6455 | maintenance |
| quint-co/quint Quint is an executable specification language based on the Temporal Logic of Actions (TLA+), designed for modeling and verifying the behavi… | 87 | 1730 | active |
| Shadow Simulator Shadow is a discrete-event network simulator that directly executes real, unmodified application code as native Linux processes, interposin… | 68 | 1727 | active |
| Guard Guard is a Ruby command-line tool that watches for file system modifications and runs custom rules or tasks in response. It has a large plu… | 80 | 6433 | maintenance |
| trailofbits/buttercup Buttercup is a Cyber Reasoning System (CRS) developed by Trail of Bits for the DARPA AI Cyber Challenge that automatically finds and patche… | 56 | 1714 | active |
| ferrocene/ferrocene Ferrocene is a safety-critical Rust toolchain, a downstream fork of the official Rust compiler, qualified for use in safety- and mission-cr… | 73 | 1689 | active |
| mldangelo/personal-site A reusable personal website template built with Next.js, React, TypeScript, and Tailwind CSS, statically exported and deployed to GitHub Pa… | 82 | 1687 | active |
| kubeshop/testkube Testkube is an open testing platform that orchestrates, executes, and analyzes automated tests inside Kubernetes infrastructure using any c… | 95 | 1671 | active |
| python/pythondotorg The Django-based source code that powers the official python.org website, built with PostgreSQL, Redis, and Celery. It is maintained by the… | 77 | 1667 | active |
| japgolly/scalajs-react A Scala.js library that provides type-safe, Scala-friendly bindings for Facebook's React, with opt-in functional programming support via Ca… | 91 | 1663 | active |
| BotMan BotMan is a framework-agnostic PHP library for building chatbots that work across multiple messaging platforms like Slack, Telegram, Facebo… | 53 | 6155 | maintenance |
| aws/aws-lambda-dotnet A collection of NuGet libraries, CLI tools, and project templates from AWS for building AWS Lambda functions with .NET. It includes event t… | 95 | 1661 | active |
| WeBankFinTech/fes.js Fes.js is a Vue 3-based front-end application solution/framework with a full plugin system covering routing, build, layout, access control,… | 77 | 1657 | stable |
| ifmeorg/ifme if-me.org is a free, open source web application for sharing mental health experiences with trusted allies like friends, family, and cowork… | 98 | 1649 | active |
| igorescodro/alkaa Alkaa is an open-source to-do application built with Kotlin and Compose Multiplatform, available on Android, iOS, and Desktop. It serves as… | 84 | 1647 | active |
| cnlohr/ch32fun A minimal open-source development environment (headers, examples, and tooling) for WCH RISC-V microcontrollers like the CH32V003, built aro… | 66 | 1622 | active |
| clash-lang/clash-compiler Clash is a functional hardware description language based on Haskell, with a compiler that transforms high-level descriptions into synthesi… | 92 | 1619 | active |
| NVIDIA/RULER RULER is a benchmark framework from NVIDIA that generates synthetic test examples to measure the true effective context size of long-contex… | 64 | 1619 | active |