Open Broadcaster Software (OBS) is a free and open-source cross-platform streaming and recording program built with Qt and maintained by the OBS Project. As of 2016, the software is now referred to as OBS Studio. There are versions of OBS Studio available for Microsoft Windows, macOS, and Linux distributions.

Open source, powerful and flexible, OBS Studio is easily our top pick when it comes to free streaming software. ... It's even possible to stream to multiple platforms at once. OBS Studio is also our top pick if you're looking for a top-quality free screen recorder.

Regards,
Caleb