Nucleo - Commercial vector icons and accompanying apps to manage and customize them.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Streamline icons - The world’s largest icon pack library - 100k icons and illustrations.
Invision - Prototyping and collaboration for design teams
Font Awesome - Font Awesome makes it easy to add vector icons and social logos to your website. And version 5 is redesigned and built from the ground up!
Sketch - Professional digital design for Mac.