1)   Comm Operator 1.0 Comm Operator simulates the rs232 device, such as GPS receiver, total station, and software related. It acts as a device as well as program. Using it, device can be developed without program. Application can be debugged and tested without real device 2)   CommLog for CE 0.3 CommLog of 5dtool is a freeware used for record and monitor the data from serial port of PocketPC. It would be useful for record data from total station, GPS and other rs232 device connected to PDA.