ViralSweep - Grow your fans and increase sales with sweepstakes and giveaways.

HootSuite - Enhance your social media management with Hootsuite, the leading social media dashboard. Manage multiple networks and profiles and measure your campaign results.

Retweet Picker - Retweet Picker is an online tool that is helping you to select the random winner from Twitter for the giveaways.

SproutSocial - Sprout Social is a social media management tool created to help businesses find new customers & grow their social media presence. Try it for free.

KingSumo - Grow your audience with viral giveaways that cut marketing costs

Zoho Social - Social media management software for growing businesses and agencies. Manage multiple social networks, schedule unlimited posts, monitor keywords, and collaborate with your team — all from a single dashboard.