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Pocket Commander (formerly Music Transfer) is a macOS app window with retro CRT terminal aesthetics. It moves music, photos and any other files between a Mac and an Android phone over USB.

A tool for practicing sun sights with a sextant — sight reduction runs entirely client-side. Intercept computes the calculated altitude and azimuth using spherical trigonometry.

2D nautical simulation game. Skipper a sailing yacht across the North Sea Traffic Separation Schemes at night.

Ever lost hours of work because you saved over the wrong file? Or wished you could go back to how your document looked last Tuesday? Pier gives you that power — without any technical setup.

A minimalistic plain text editor for macOS with a strict no-extras policy: no syntax highlighting, no AI, no autosave. A .txt file written fifty years ago opens today, without conversion, without a subscription, without the original software.

One-click sync to GitHub. Quay is a menu bar app that watches local folders and pushes changes to GitHub over Git. Written in Swift; Git operations shell out to the system git binary.

A logbook app for iOS. Sophisticated offline-capable sync for offshore sailors. Add photos, GPX tracks, and GPS positions for passage events. Send digital postcards.