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Madgicx - Ad performance beyond human limits
Retweet Picker - Retweet Picker is an online tool that is helping you to select the random winner from Twitter for the giveaways.
AdEspresso - Optimize your Facebook Ads Easily, Like Morning Coffee
KingSumo - Grow your audience with viral giveaways that cut marketing costs
Facebook Ad Hunter - Facebook Ad Hunter uncovers hidden audiences to target when running Facebook Ads.