Open source. Open possibilities.

Karate is an open-source test automation framework that unifies API testing, mocks, performance testing, and UI automation into a single tool.

Hoppscotch is an open-source API development ecosystem providing a lightweight alternative to Postman and Insomnia for testing and designing APIs.

Trafficator is a simple web traffic generator built on Puppeteer designed for local analytics testing, allowing users to define custom funnels, browsing steps, and probabilities.

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.

TestCafe is a Node.js-based end-to-end web testing framework. Write tests in JavaScript/TypeScript without WebDriver. Supports Windows, macOS, Linux and various browsers. Features automatic waiting, live mode, and CI integration.

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.

Detox is a gray box end-to-end testing framework for mobile apps, supporting React Native on Android and iOS. It automates user interactions, reduces flakiness, and integrates with CI/CD pipelines.