The Y Combinator Database - The definitive database of YC companies with all the metrics
Creative Market - Buy and sell handcrafted, mousemade design content like vector patterns, icons, photoshop brushes, fonts and more at Creative Market.
Y Combinator Companies - Interactive list of all 1000+ YC companies
SocialSizes - Sketch templates for sharing images & videos on social media
Apply to YC (Y Combinator) - Curated collection of resources for founders applying to YC.
UI/UX Assets - Curated UI kits, wireframes, templates, icons and more.