Glassboard – Draw over everything on your Mac, Khan-academy style

Glassboard is a Mac productivity app that lets users draw over any app or screen with a keybind, creating temporary, fade-away annotations in a Khan-academy style. It’s designed for educators, presenters, and anyone who needs to visually highlight or explain content on the fly without disrupting their workflow. The app is interesting because it solves a long-standing gap in macOS—offering a simple, system-wide overlay for real-time drawing that disappears when done.