inzpire.me - An end-to-end solution for influencer marketing
Publicfast - The first influencer marketing platform for Periscope
Insense & Paid Media - Find creators for short-term and long-term partnerships
Klear Chrome Extension - Find influencers right in your twitter feed
FameBit - Easiest Way to Find, Hire, and Work with YouTube Influencers
Influencers by Buzzbomb - Find, manage and track influencers.