Scribble Party

Most lesson recorders send your video to someone's cloud and want an account first. Scribble Party runs entirely in your browser. Draw on an infinite canvas, drop a live camera bubble of yourself on the board (it cuts out your background), and record the whole thing with your voice. Recordings save to your device as you go, so a crashed tab doesn't lose a take. Works offline as an installed app. No signup, no install, nothing ever uploaded!