Nucleo - Commercial vector icons and accompanying apps to manage and customize them.
SoundBetter - Marketplace for musicians and music production professionals
The Noun Project - Creating, Sharing and Celebrating the World's Visual Language
Melody ML - Easily separate audio tracks using machine learning
Streamline icons - The world’s largest icon pack library - 100k icons and illustrations.
PrimoMusic - An iTunes alternative made to manage iPhone/iPod media files