Hypevertise allows you to view in-depth analytics on an Influencers audience, engagement and posts giving you the ability to select the best Influencer for your campaign.
VerifyShare - instagram, instagram tools, giveaway, parsing,
Heepsy - Find influencers in seconds. Instant access to influencers by location and category. Analyze and contact influencers. Start your campaign now.
Giv - Snapchat & Instagram giveaways made easy
Upfluence - Upfluence allows brands to identify their influencers in seconds and reach them at scale.
Retweet Picker - Retweet Picker is an online tool that is helping you to select the random winner from Twitter for the giveaways.
inzpire.me - An end-to-end solution for influencer marketing