Best Screen Overlay AI Tools for Coding in 2025
Screen overlay tools put AI assistance right where you need it - on top of your coding environment. But not all overlays are created equal.
What is a Screen Overlay Tool?
A screen overlay is a transparent window that sits on top of other applications. It displays information without blocking your main workspace.
Why Ofradr's Overlay is Superior
- True transparency - not visible in screen captures
- Sits above all windows including fullscreen apps
- Hotkey-controlled visibility
- Minimal impact on system performance
How screen-overlay AI tools work
A screen-overlay assistant draws information on top of whatever you're doing without taking over the window. The crucial difference between tools is whether that overlay is part of the captured screen. Many "overlays" are really just always-on-top windows, which still appear in recordings and shares.
Ofradr is a true system-level overlay rendered by the compositor, so it sits visually on your screen but is excluded from screen capture — the distinction that makes it safe for interviews and proctored exams.
- True overlays render outside the captured surface
- Always-on-top windows still show in recordings
- Hotkey toggling hides the overlay instantly
- Native rendering keeps the footprint tiny (~800KB)
Frequently Asked Questions
Are screen-overlay AI tools visible on screen share?
It depends on the tool. Always-on-top windows are visible, but Ofradr's true system-level overlay is excluded from screen capture and screen sharing.
What is the best invisible screen-overlay AI tool?
Ofradr is a leading choice: a native, compositor-level overlay that stays out of recordings and shares, supports offline models, and is free to start.