Retweet Picker - Retweet Picker is an online tool that is helping you to select the random winner from Twitter for the giveaways.
Herefeed - See what's hot near you. Powered by Instagram.
Tweetdraw - Tweetdraw is an online tool that provides an easy way to pick a winner for a giveaway, having a quick Twitter Quote Draw, Instagram Comment Draw, and Twitter Retweet Draw.
Instaround - A simple app to find Instagram photos and people around you.
Giv - Snapchat & Instagram giveaways made easy
Myscore.today - Check your influencers score