Eagle App - Unify your creative inspiration in one place. Store anything – inspiring images, design mockups, illustrations, screenshots and more.
Website Informer - Website.informer: complete data lookup & free aggregated report on any domain including whois, visitors, IP & DNS details, competitors, owners, etc
Pixave - The ultimate image organizer for the Mac.
SimilarWeb - SimilarWeb.com is a website analysis tool that gives you analytics information for any website.
Ego - Ego gives you one central—and lovely—location to check web statistics that matter to you.
Site Rank Data - View historical rank information of websites via time series charts.