Postcron is a tool for scheduling and publishing posts in several Facebook and Twitter accounts simultaneously.

Klout is a website and mobile app that uses social media analytics to rate its users according to online social influence.

Bluenod is a simple way to find influencers with Twitter visualization.

Buffer is a software application for the web and mobile, designed to manage accounts in social networks, by providing the means for a user to schedule posts.

inboundli content enhancement platform for social media and blogging.