Skuuudle - Discover, match and monitor your eCommerce competitors.
WiseStamp - WiseStamp allows you to easily create and implement slick and unique email signatures for your business.
Price2Spy - Price2Spy is a price monitoring, pricing analytics, and repricing tool, meant to help eCommerce professionals keep an eye on their competitors or retailers.
MySignature - MySignature is FREE Email Signature Generator that helps to create Professional Signatures for major email clients such as Outlook, Gmail...
BuiltWith - Find out the technology behind websites
Sigstr - Email signature marketing