Zalenium - Czyli lepszy Selenium Grid

Zalenium is an open source Selenium Grid extension that allows for video recording of test runs within a Docker container. It provides features like easy scaling of browser instances using Docker, recording videos of test runs for debugging purposes, and accessing browsers via VNC during tests. Some advantages include support from Zalando, faster performance than traditional Selenium Grid, and open source maintenance. The main disadvantage is that it requires Docker which limits its use on Windows systems initially.