google for bikelog1.9 and bikepro. Both are excellant. I am evaluating 4 different ones. I switched to a wireless link (polar cs200cad) cyclocomputer so I am sorta locked into the polar software, but pccoach is supposed to be adding this unit to their database soon. There sure are some very varied programs to choose from. I think I ride just to generate data to plug in and generate charts!!!!!!