Bandwidther
SwiftUI menu bar app showing which macOS apps are using network bandwidth
About
Bandwidther is a single-file SwiftUI menu bar app by Simon Willison that opens a panel listing per-application network bandwidth use on macOS, compiled with the Xcode command line tools without opening Xcode. The README states the app was vibe coded using Claude Opus 4.6 and GPT-5.4.

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