PayPal IPN Agent is a PHP class for handling backend processing of PayPal Instant Payment Notifications. It correctly validates the IPN itself and the PayPal SSL Certificate, and has hooks for checking prices and taking actions on a "Completed" payment. It was designed to work with any kind of shopping cart or payment tracking system by storing all IPN transactions in a simple sharable DB layout for later examination.
Abstract provides a basic flow-based accounting model. It supports processing of multiple economic resources. It automatically calculates the value of accounting transactions given information on resource transfers. This also includes automatic revenue recognition and profit/loss calculation on a per-transaction basis.
SAP R/3 is an integrated software solution for client/server and distributed open systems. It provides the world's most-used standard business software for client/server computing, meeting the needs of customers ranging from small grocers with three users to multi-billion dollar companies. It is highly customizable using SAP's proprietary programming language, ABAP/4. It is scalable and well-suited for many types and sizes of organizations.
YourPay is a PHP class that can be used to submit WorldPay transactions through a WorldPay account without the very impersonal payment pages provided by the said company. This class will submit the user's credit card details in real-time and return either "Authorise" or "Decline" according to the response.
avsap is a powerful, flexible, and complete financial accounting package. It supports double entry book keeping, cash and bank books, ledger, journal, customizable chart of accounts, template voucher entry, custom reports, year closure, customizable financial years, and multiple login levels. It is multi-user out of the box, acid compliant, fast, and user friendly.
ISPacct (formerly Brickacct) accounts the logfiles which Bintec routers spew out depending upon configurable rules. Logfile-analyzing mail accounting functionality is also included (in beta stage). It has multiple backends like text, HTML, and MySQL. It was designed and used by a small ISP and is geared towards such uses as monthly accounting per IP or per dial-in use.
The FreerP Project is a set of integrated business intelligence applications. The main applications belonging to the FreerP Project are warehouse logistics, shipping logistics, production process control, customer relations management, e-commerce, e-business, inventory management, and accounting.