jPOS.org:About

From jPOS.org

jPOS is a Java[tm] based financial transaction library/framework that can be customized and extended in order to implement financial interchanges.

Our mission is to provide a highly reliable, mission-critical, financial interchange/payment framework to the OpenSource community. It's available under an OpenSource license, and has been downloaded more than 25000+ times, having 700+ active personal and corporate users from more than 65 countries that have used it to build successful and extreme reliable payment solutions in a variety of environments.