TurnGPS
GPS users that have equipment capable of connecting to the internet via a cellular modem using NTRIP can connect to TurnGPS.
TurnGPS is designed to connect multiple, permanently located GPS Receivers in a network for a range of precision GPS applications including surveying, engineering, construction and GIS data collection. TurnGPS enables high-accuracy positioning in real time over much larger geographic region than standard real time methods, using the internet for communication. It maximizes the performance from a network of reference stations and eliminates the need to set up a temporary field base station for each individual project or post processing data, saving you time and money. It is ideal for any application requiring reliable, fast, high precision wide area positioning.