title: What payment processing frameworks, like ActiveMerchant, are available for other languages?
body: <p>Rails has frameworks such as <a href="http://www.activemerchant.org/" rel="noreferrer">ActiveMerchant</a> and <a href="http://github.com/cainlevy/freemium/tree/master" rel="noreferrer">Freemium</a> (which uses ActiveMerchant) to simplify dealing with payment processing. What other frameworks are there for other programming languages such as PHP or Python?</p>