AddThis - AddThis free website tools include share buttons, targeting tools and content recommendations help you get more likes, shares and followers and keep them coming back.
ViralSweep - Grow your fans and increase sales with sweepstakes and giveaways.
Sharingbuttons.io - Quickly generate social sharing buttons with a tiny performance footprint.
Woobox - Woobox helps you easily create powerful contests, sweepstakes, coupons, and more to grow your fans...
AddToAny - Share buttons by AddToAny, the universal sharing platform for websites and apps.
Gleam - Marketing apps designed to help you grow your Business