Creative Market - Buy and sell handcrafted, mousemade design content like vector patterns, icons, photoshop brushes, fonts and more at Creative Market.
CoSchedule - CoSchedule is the #1 marketing calendar that helps you stay organized and get sh*t done. Plan, produce, publish and promote your content.
SocialSizes - Sketch templates for sharing images & videos on social media
Embedly - Embedly helps publishers and consumers manage embed codes from websites and APIs.
Icons8 Developer API - 500k+ design assets, now available on-demand
Rocketium - A DIY video creation platform. Make videos in minutes using preset themes and templates.