macOS menu-bar app that draws a colored outline around every window, one color per app, so you can tell them apart at a glance
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Updated
Jun 4, 2026 - Objective-C
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cgwindowlist
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Research on macOS window privacy APIs — CGWindowList, CGSSetWindowSharingState, ScreenCaptureKit exclusion, and screen capture prevention techniques
macos swift security apple privacy research objective-c screen-capture cocoa coregraphics window-management screen-recording lockdown-browser-bypass screencapturekit cgwindowlist
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Updated
Apr 3, 2026
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