Material Icons Library: 1000+ free vector icons
Material Icons Library is a free set including more than 1000 icons recently released by the design team at Pixsellz.
Free Figma Resources
iOS 11 UI kit for iPhone X
A free iPhone X UI kit for Sketch based on iOS11 provided in both light and dark versions. Built and released by Design+Code.
iPhone & iPad vector mockups
A free set of iPhone and iPad vector mockups in flat style for wireframing and UI presentation released by KK UI Store.
Feather icon set – 200+ SVG icons
Feather icon set is an ever expanding collection of simple icons. Each icon is 100% vector, meaning each is completely customizable.