D-RATS is a free, easy to use, multi-platform program for data communications with D-STAR devices or through the Internet. You do not need a D-Star Radio to learn how to use D-Rats.

D-Rats download page has install files for 32bit and 64bit

Get started with D-RATS using this detailed information.

D-RATS Ratflector List

D-RATS Operating Guide ,  

Introduction To D-Rats ,