Placement
Use a side, top, bottom, or full frame depending on how visible the marker should be.
Help
Set up color-coded frames for your Mac windows.
Edge is designed to stay simple: choose the apps that need a visual marker, pick a color and placement, then keep working as usual.
Getting started
Download Edge, open the app, and grant the Accessibility permission macOS asks for. Edge uses that permission to read window position and size so it can draw each frame in the right place.
Choosing apps
Add the apps you want to recognize faster, then assign each one a color. Use stronger colors for the windows you switch to most and quieter colors for background work.
Mission Control
Mission Control always uses full frames so every window stays easy to identify.
Privacy
Edge stays local and does not collect, transmit, or sync your data.