The PayChannel API makes it possible to incorporate its credit card processing gateway into your software platform. Public information on the API is not available, though it does provide 8 payment features.
Google's PaaS platform, AppEngine has been seeing consistent releases every month. The October release was different from the earlier one. In addition to the usual set of fixes and enhancements, the latest release 1.7.3 also sees support for new Java 7 Language features, while the Python 2.7 runtime now fully supports Django 1.4.