Gnow.it VS Zest.is

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.

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

Taboola - Drive traffic to your site, blog or video, or monetize your site with the largest platform for content recommendation, audience acquisition, and native advertising.

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

Outbrain - Outbrain is the world's leading performance-driven discovery and native advertising platform. We help advertisers get discovered on leading publishers websites.

Written - Written helps content marketers build their audience by licensing content and audience from bloggers.