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.
Cocorate.com - Online currency and cryptocurrencies exchange rates calculator helps you convert anything in real-time.
Yahoo! Finance - Currencies Center - Currency Converter from Yahoo! Finance.
Currencies - An exchange rates currency converter for Android
Elk - The fastest way to convert currencies on mobile.