WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.

ConvertFlow - Convert the right people with the right calls-to-action at the right time using a personalized way to guide visitors to become customers.

MySignature - MySignature is FREE Email Signature Generator that helps to create Professional Signatures for major email clients such as Outlook, Gmail...

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.

Sigstr - Email signature marketing

Crazy Egg - Through Crazy Egg's heat map and scroll map reports you can get an understanding of how your visitors engage with your website so you can boost your conversion rates.