Sketch Repo - Collection of resources for anyone who uses Sketch
Startup Stash - A curated directory of 400 resources & tools for startups
Charts by ls.graphics - The most comprehensive collection of charts for Sketch
Content Marketing Stack - A curated directory of content marketing resources
Gmail Add-on Design Kit - A simple Sketch library to speed up Gmail Add-on designs
StartupResources.io - Tightly curated lists of the best startup tools