V12 Data - V12 Data offers rich data sets with verified addresses and emails for personalized marketing campaigns.
ConvertAll - A comprehensive unit conversion program.
Lotame - Make your data actionable, learn about your most valuable customers, improve ROI by targeting the right audience and increase relevance across screens.
Converter NOW - A simple, immediate and fast unit converter!
Google Audience Center - 3 votes and 6 comments so far on Reddit
Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.