KeyCastr, an open-source keystroke visualizer

Mac app that shows all open files, directories, sockets, pipes and devices in use by all running processes. Nice GUI for lsof.

Managing windows size and position in OSX

A QuickLook plugin that lets you view plain text files without a file extension

Universal game trainer for macOS

Objective-C interactive regular expression validator and tester for OS X.

[cocoa] Mac port of sfxr with document support, etc

A quick command line tool for OS X to get your geographic coordinates using the CoreLocation framework.

Source code for MultiFirefox