XE.com - XE.com Inc. (XE) is a Canadian online foreign exchange services company.
Numi App - Numi is a beautiful text calculator for Mac.
Yahoo! Finance - Currencies Center - Currency Converter from Yahoo! Finance.
Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
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.
SymCalc - Symbolic Calculator - Math toolbox for iOS. Advanced calculator features with a tape-like history, not requiring internet...