PushPrime - Supercharge your website with push notifications
Skuuudle - Discover, match and monitor your eCommerce competitors.
PushCrew - Push Notifications for Websites
Price2Spy - Price2Spy is a price monitoring, pricing analytics, and repricing tool, meant to help eCommerce professionals keep an eye on their competitors or retailers.
Proof - Website conversion rate optimization and visitor monitoring
BuiltWith - Find out the technology behind websites