LimeLite - A simple, easy-to-use annotation tool for Mac
Skuuudle - Discover, match and monitor your eCommerce competitors.
LightTag - The text annotation tool for teams
Price2Spy - Price2Spy is a price monitoring, pricing analytics, and repricing tool, meant to help eCommerce professionals keep an eye on their competitors or retailers.
Good Annotations - A online annotation tool that is perfect for providing feedback to your team.
BuiltWith - Find out the technology behind websites