testium

Testium is an open-source framework for automated testing of web applications. It focuses on end-to-end testing by driving browsers to simulate user interactions, verify UI behavior, and validate server responses. The framework is designed to be lightweight, portable across platforms, and easy to integrate into existing development workflows. The name combines the word test with the -ium suffix commonly used for software projects.

Testium was created to provide a simpler alternative to heavier test suites and to improve test feedback in continuous integration environments. It has attracted contributions from individual developers and teams seeking a modular, scriptable approach to browser automation. The project maintains a small but growing ecosystem of adapters and plugins that extend its capabilities.

Key features include a browser automation layer capable of driving modern browsers in headless or headed mode, a test runner that supports parallel execution and retries, and an extensible configuration system. Tests are described in script form and can cover user actions, assertions, and data setup. The framework emphasizes deterministic test results and isolation between tests to reduce flakiness.

Usage typically involves installing the toolkit, writing test definitions, configuring environment settings, and running tests locally or in continuous integration. It can generate reports, capture artifacts such as screenshots, and integrate with common CI services. While it competes with Selenium, Cypress, and Playwright in the broader market, Testium aims to offer a flexible, lightweight option for teams that want scriptable control over browser tests.