Brand.ai - Create a style guide & integrate with Sketch, Slack, & Gulp
Startup Toolkit - Interactive how-to guides to launch your startup
Mysocial - Powerful, creator tool-box to help you grow your followers, attract more clients and increase your revenue.From up and coming artists to mega influencers.
Techstars Entrepreneur's Toolkit - Online resource to help you learn about entrepreneurship
Brandpad - Host your brand guidelines and assets in the cloud
AwesomeHunt - Community-curated lists of learning resources on any topic.