ZoomacIt

Sysinternals ZoomIt is a presenter’s superpower on Windows — freeze the screen, zoom in, draw arrows, type live. macOS never had a proper equivalent. ZoomacIt brings it over: live zoom (magnify a moving screen at 60fps via ScreenCaptureKit), draw/annotate, a region snip to clipboard, a DemoType mode that types your commands for you during a demo, and a break timer. It’s a menu-bar app, hotkey-driven, no Dock icon.

It started as a fork after the original community project was archived (Microsoft shipped an official ZoomIt for Mac and “Sherlocked” it), then grew a proper release pipeline: a universal (Apple Silicon + Intel) binary, a Homebrew cask (brew install --cask zoomacit), and a docs site. Built in Swift 6 + AppKit with zero external dependencies — most of it vibe-coded over weekends because I just wanted it to exist.