Discover quality open-source projects, submit projects anonymously, and claim and edit your own project.
A little curiosity. A world of open source.
THE FIRST COLLECTIONQuick is a behavior-driven development (BDD) testing framework for Swift and Objective-C, inspired by RSpec, Specta, and Ginkgo. It pairs with Nimble for expressive matchers and supports multiple Swift versions via CocoaPods or Swift Package Manager.
Hoppscotch is an open-source API development ecosystem providing a lightweight alternative to Postman and Insomnia for testing and designing APIs.
React Testing Library is a lightweight solution for testing React components, encouraging tests that mimic real user interactions for better maintainability and confidence.
QA Studio is an open-source, self-hostable test management platform for QA teams. It offers hierarchical test suites and cases, test run planning across environments, rich dashboards for results and trends, media attachments, and a full REST API.
Reel generates always-current demo films for web apps and CLIs from a YAML spec. It drives a real browser or terminal, records the actual flow, and renders GIF, MP4, WebM, storyboards, and interactive HTML compositions. Works via CLI, Studio UI, or Claude Code plugin. Fails CI when demos break.
ripr is a static mutation-exposure analysis tool that identifies changed behavior your tests reach but don't actually verify, without running mutation testing.
MCP Arcade is a command-line testing tool that runs a small catalog of experiments, called atoms, against MCP servers, judging results by the JSON-RPC wire and sandbox file changes rather than by tool descriptions or model prose.
Toxiproxy is a framework for simulating network conditions to test application resiliency and identify single points of failure in CI and development environments.
Playwright is a comprehensive framework for web automation and testing that provides a single API to drive Chromium, Firefox, and WebKit across Linux, macOS, and Windows.
Keploy is an open-source, language-agnostic API and integration testing tool that records real API calls, database queries and streaming events via eBPF, then replays them as tests and data mocks without code changes.
Faker is a Python package used to generate synthetic data for database bootstrapping, stress testing, and data anonymization.
A DuckDB compatibility harness for rudb. It verifies conformance through differential execution against a real DuckDB binary, weighted SQL coverage, storage format round trips, and C ABI checks.
A comprehensive Node.js best practices guide covering project architecture, code style, testing, production, security, and more.
A reusable, pluggable Python/pytest-based test suite for validating ADBC database drivers. It runs SQL queries against drivers to test feature support, data type handling, and database-specific quirks, generating documentation of supported and unsupported features. Supports per-driver test overrides and a consolidated .txtcase test format.
Ladle is a lightweight environment for developing, testing, and documenting React components faster. It uses story files, supports local serving, and provides docs, demos, and community links.
RecurSpec is a Node.js command-line testing tool that checks whether the recovery instructions in error messages actually resolve the original failure, running each case in an isolated temporary workspace and blocking unsafe commands.
pytest is a Python testing framework that simplifies writing small tests and scales to complex functional testing. It features detailed assertion introspection, auto-discovery of tests, modular fixtures, and compatibility with unittest.
Jest is a comprehensive JavaScript testing framework that works out of the box for most projects, offering fast interactive watch mode and snapshot testing to capture large objects.
Bruno is an open-source API client for exploring and testing APIs, designed as a lightweight, offline-only alternative to tools like Postman and Insomnia.
ts-jest is a Jest transformer that adds full TypeScript support, including source‑map handling and type‑checking, allowing developers to run Jest tests directly on .ts files.
