Open source / Tauri v2 / around 1.5 MB

MarkerOn

A keyboard-first screen annotation tool for demos, teaching, meetings, and recordings. Draw over any app, then switch to click-through mode while your marks stay visible.

Download latest Microsoft Store

8 drawing tools Click-through mode Whiteboard mode Windows / macOS / Linux

Instant Press Ctrl+Shift+D and start drawing over any app.

Unintrusive Runs quietly in the tray, with no account, telemetry, or cloud dependency.

Precise Keyboard shortcuts, angle snapping, custom widths, and undo/redo stay close at hand.

Built for live explanation

Keep the screen moving while your marks stay put.

Click-through mode

Toggle drawing and pointer modes from the toolbar or with Ctrl+Shift+X. Annotations remain visible while clicks, scrolls, and typing go to the app underneath.

Keyboard-first tools

Switch tools with number keys, adjust width with Ctrl+scroll, cycle colors with Q/E, and clear or copy without opening menus.

Whiteboard when needed

Press W for a clean whiteboard, keep content between sessions, and copy the result as an image for docs, chats, and notes.

Product surface

A focused overlay, not another app to manage.

MarkerOn keeps its controls compact and readable, so the audience sees your explanation first and the tool second.

MarkerOn annotation tools — Pen, highlighter, arrow, shapes, eraser, text, and color controls.

MarkerOn settings panel — Configure toolbar behavior, whiteboard content, drag modes, shortcuts, and startup.

Official downloads

Get MarkerOn from a trusted source.

Third-party reposts may lag behind or repackage old installers. Use GitHub Releases or Microsoft Store for the latest version and update path.

GitHub Releases Windows, macOS, Linux assets Microsoft Store Windows install and updates Source code MIT licensed on GitHub

Common questions

For people comparing ZoomIt, Epic Pen, and lightweight whiteboards.

Is MarkerOn a ZoomIt alternative?

MarkerOn focuses on fast annotation, keyboard control, and click-through drawing. It works well alongside Windows Magnifier if you need zoom during a presentation.

Does it have Epic Pen-style mouse mode?

Yes. v1.0 adds click-through mode, so annotations stay visible while you use the apps below, then switch back to drawing whenever needed.

Does it upload screenshots or require an account?

No. MarkerOn is local-first, open source, and does not require an account. Annotation content stays on your machine.