KeyCastr, an open-source keystroke visualizer

Modern framework for managing global keyboard shortcuts compatible with Mac App Store. More details:

The best control to record shortcuts on macOS, written in ObjC with Swift in mind

Command line interface for the built-in speech recognition and transcription capabilities in macOS.

iPhone app for testing the x-callback-url interapp communication protocol

Everything you loved about navigating files on your Macintosh Performa, Quadra, LC or Power Macintosh.