Sumo - Free tools to grow your email list.
Viral Loops - Viral Loops is a viral and referral marketing platform to launch ranking competitions, sweepstakes, pre-launch and referral programs.
OptinMonster - OptinMonster helps to convert abandoning website visitors into subscribers and customers.
Yotpo - Yotpo is the smartest way to generate customer content, drive traffic and increase conversions.
OptiMonk - OptiMonk is the most powerful Onsite Retargeting platform, that helps you increase the conversion rate of your site, and get more leads by recovering lost visitors.
Swagbucks - Swagbucks is a loyalty program that offers individuals rewards for engaging in various activities. Users can earn reward points for performing Internet searches, purchasing items from affiliated vendors, or completing polls.