Kap is an open source screen recorder for Mac built with web technology. It's popular with designers and developers who need quick, high-quality GIFs and short videos for demos and bug reports.

Key features:

Export recordings as GIF, MP4, WebM, or APNG.
Include optional audio with your recording.
Highlight clicks so viewers can follow along.
Trim recordings before exporting.
Share to Giphy, deploy with Vercel, or upload to Streamable using plugins.

Requires macOS 12 or later, with separate downloads for Apple silicon and Intel Macs. Kap is free and open source, with its code on GitHub.