The bitbank Private Java SDK by Kohei Sato allows developers to access the bitbank Private API from their Java applications in order to automatically buy and sell cryptocurrencies. This SDK links the contents of orders with Google App Script so that notifications can be sent to Gmail. Documentation is given in Japanese.
Here's an interesting online business you may not have heard of: Betfair. Who are they? They're the world's leading online betting exchange, a concept they helped pioneer back in 2000, and now have annual revenues over 180 million pounds Sterling.
Global payments company Mastercard has announced that it will be opening up its internal blockchain API to developers. According to the company, the API, which is focused on B2B transactions, "Mastercard’s blockchain solution provides a new way for consumers, businesses and banks to transact."
Airbitz has utilized its Bitcoin Wallet Plugin API internally and through select partners for a while. Now, the company has released the API to its entire user base. Airbitz expects the API to boost cryptocurrency usage through integrations with everything from marketplaces to gift card vendors.