Open Broadcaster Software (OBS) is a free and open-source software designed for video recording and live streaming. It allows users to capture video from various sources, including screens, webcams, and external devices, making it popular among gamers, content creators, and educators. OBS supports multiple platforms, including Windows, macOS, and Linux. It offers features like scene composition, audio mixing, and customizable transitions, enabling users to create professional-quality broadcasts. Its flexibility and extensive plugin support make it a versatile tool for anyone looking to share video content online.