If you want to stream online via Twitch or another video platform, OBS Studio is the tool to use. Here's how to get started using it on macOS.

You can screen record on Windows 10 using the Game Bar. A third-party app like OBS Studio allows you to record your screen and computer audio.

OBS Studio is the most widespread streaming and recording software. The core reason for its popularity is that it is open-source and completely free.