Sketch Repo - Collection of resources for anyone who uses Sketch
Monsters for Sketch - Create your own monster character in seconds.
Frames for Sketch - Create awesome websites & apps using powerful design system
Sketch 42 - Now with export presets, touch bar integration, and more
Confetti for Adobe XD - Generate gorgeous confetti patterns in 1 click
Now UI Kit - A beautiful Bootstrap 4 UI kit. Yours free.