ZylGPSReceiver is a Delphi / C++Builder component collection that communicates with a serial GPS receiver. It works with any NMEA compatible receiver connected to one of the serial ports. You can use it also with USB and Bluetooth devices, because

Virtual treeview latest component for c++ builder/delphi

Abakus VCL is a set of professional Delphi / C++Builder realtime components for virtual instrumentation. Full source include