The color-blind simulator and contrast checker for Sketch. Design with accessibility in mind.
sketch
30 free Sketch plugins to grab right now – InVision Blog
git-sketch-plugin
A Git client built into Sketch that generates visual diffs.
Sketch Runner
A keyboard utility for Sketch to “supercharge your daily workflow”
Craft by InVision LABS
A plugin suite for Sketch and Photoshop that lets you design with real data
Devices — Facebook Design Resources
Images and Sketch files of popular devices. Each comes with a PNG and a Sketch file for that device.