Draw on anything.
Broadcast everywhere.

Glass Overlay is a macOS live-production studio — a virtual camera that adds live drawing, slides, 3D models, and multi-camera switching on top of any call, with studio-grade recording and a built-in edit suite.

Works alongside Zoom, Riverside, StreamYard, and friends.

Download the beta See features
The Glass talent window: live camera with a 3D glider model, a red annotation circle, the drawing toolbar, and transport controls.

Draw on anything

Annotate live over your camera, slides, or screen — pen, shapes, laser, even 3D models you can fly with hand gestures. Every stroke lands in the virtual camera, so your call app sees it instantly.

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Studio-grade capture

Up to four channels, one-click GO, multi-track local ProRes recording that survives crashes, and RTMP streaming to Twitch, YouTube, or any custom endpoint.

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Finish in the app

A real timeline editor with per-speaker transcripts, filler-word review, multi-track export, and a clean Final Cut Pro handoff — no second app required.

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iPad Live Call view: full-screen camera with a 3D glider model and a drawn circle, a Mac-parity drawing toolbar, and a peer picture-in-picture at the top.
The iPad and iPhone companions speak the same language as the Mac — same tools, same 3D models, same canvas. Draw with Apple Pencil on the iPad and it shows up live in everyone's broadcast.

Got an invite?

Click the link your host sent you. With Glass Overlay installed, the link opens the app pre-filled with the room's address and code. Without it, you'll see a join page that walks you through manual setup.