Cocorate.com - Online currency and cryptocurrencies exchange rates calculator helps you convert anything in real-time.
XE.com - XE.com Inc. (XE) is a Canadian online foreign exchange services company.
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.
Currencies - An exchange rates currency converter for Android
Yahoo! Finance - Currencies Center - Currency Converter from Yahoo! Finance.
Currency - Currency provides up-to-date exchange rate information for over 50 currencies and 70 countries!