XE.com - XE.com Inc. (XE) is a Canadian online foreign exchange services company.
Aveloy Graph - Aveloy Graph is an application for graph creation / data visualization
Yahoo! Finance - Currencies Center - Currency Converter from Yahoo! Finance.
SciDaVis - SciDAVis is a free application for Scientific Data Analysis and Visualization.
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.
QtiPlot - QtiPlot is a professional scientific data analysis and visualisation solution.