The PayPal Android SDK allows the use of PayPal and credit card payments to mobile apps. The SDK supports two use cases for making payments - Single Payment and Future Payments - and a third use case for obtaining information about the customer - Profile Sharing.
Moving money online is commonplace these days, and the simpler and faster the process can be, the more appealing it is. Ripple provides another option in the world of online payment solutions. It's an open source, almost free to use payment network that provides a simple and hassle-free way for anyone in the world to send money to anyone else. The Ripple API allows developers to use this functionality and integrate the payment system into other projects.
Exchanging currency for items or services is such an old time tradition and yet there are so many ways it can be done. I’ve just taken a stroll through the payment systems neighborhood and I’ve felt inspiration from the innovators FaceCash & Dwolla, pride in my home state operator PowerPay, and murky suspicion toward JunglePay.