Baritone - Spotify controls that live in your menubar.
Poolsuite™ - The super-summer music player
Soundiiz - Transferring playlists between various music streaming platforms.
Alfred Spotify Mini Player - Alfred 2 workflow to control your Spotify library at your fingertips.
Hologram - Frontend Development and Design
Lunar.fyi - Control monitor brightness, adapt using the ambient light sensor, adjust volume, switch inputs and turn off displays without fiddling with clunky buttons.