Dashboard UI Kit - A modern & responsive dashboard UI kit for designers.
Invision - Prototyping and collaboration for design teams
Material Kit - A badass Bootstrap UI Kit based on material design
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Module 02: Layouts - Professional toolkit for UI/UX design
Craftwork - A collection of User Interface resources made by Craftwork