Publicfast - The first influencer marketing platform for Periscope
FameBit - Easiest Way to Find, Hire, and Work with YouTube Influencers
Klear Chrome Extension - Find influencers right in your twitter feed
Smarp - Smarp is an employee advocacy SaaS solution that turns employees into brand ambassadors and influencers.
Influencers by Buzzbomb - Find, manage and track influencers.
inzpire.me - An end-to-end solution for influencer marketing