XE.com - XE.com Inc. (XE) is a Canadian online foreign exchange services company.
Checkout Page - Sell on your site with customizable checkouts. Tailor-made one page checkouts to sell digital products & services without an ecommerce store.
Yahoo! Finance - Currencies Center - Currency Converter from Yahoo! Finance.
Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.
Currencies - An exchange rates currency converter for Android
Stripe Payment Links - Create a link. Sell anywhere.