Since August 2018, the Authorize.Net API has been reorganized to be more merchant focused. Authorize.Net AIM, ARB, CIM, Transaction Reporting, and SIM classes have been deprecated in favor of ...
QuickFIX/J is a full featured messaging engine for the FIX protocol (FIX versions 4.0 - 5.0SP2/FIXT1.1 and FIXLatest). It is a 100% Java open source implementation of the popular C++ QuickFIX engine.