Design Principles - An open source repository of design principles and methods
Pudding.ai - Real-time ad creative analysis solution that helps marketers to easily understand ad creative performance with actionable insights.
Facebook Design Resources - A collection of free resources made by designers at Facebook
AdWhistle - AdWhistle is a web-based platform that provides you the features and tools to create a campaign strategy and run the ads successfully on various social media platforms.
Facebook - Connect with friends, family and other people you know. Share photos and videos, send messages and get updates.
AdPlexity - AdPlexity is a popular and highly effective competitive intelligence service in the world and is a perfect fit for individuals looking up to their ad campaigns and crush the competition.