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.

OS X menubar status indicator

Mac Media Keys for the Masses

NeXTSTEP-like desktop environment for Linux

Cursor Manager for OSX

VLC for iOS/iPadOS and tvOS official mirror

SpriteKit-based faux analog watch face example for watchOS

OS X comic viewer

Convert an iOS Simulator app bundle to an iOSMac (Marzipan) one (Unsupported & undocumented, WIP)

Quark Shell for Mac helps web developers to create native-like Mac menubar app using HTML and JavaScript without writing any native code.

Apollo for Reddit tweak with in-app configurable API keys

OS X App to edit compiled .car files

libvlc bindings for OS X, iOS and tvOS in Objective-C, official mirror

A window management application (replacement for Divvy/SizeUp/ShiftIt)

A floofy Mastodon companion for iOS

Finally gain control of your bluetooth headset's media buttons.

Menu Clock - Additional clock on your mac menu bar

Themeable OS X iTunes music player with theming support reversed from Bowtie