Interfacer - Collection of more than 200+ free design resources

Quuu - Quuu is a curated content suggestion platform that connects to your Buffer queue, allowing you to grow a relevant social media following across your entire social landscape.

Facebook Design Resources - A collection of free resources made by designers at Facebook

PromoRepublic - PromoRepublic is an online editorial calendar for social media marketers and library of custom designed templates and post ideas for social networks. The calendar is stuffed with content for latest trends, important events’ and holidays notifications

Freebiesbug - Collection of the best free web design resources.

ContentStudio - ContentStudio is a social media management platform to discover engaging content, share on multiple networks and amplify your content marketing.