I use Jan Somers PIA PRO which costs around $500.
Other programs available are,PIA PERSONAL..$245
POSH…$200.These are available as trial versions at http://www.business.com.au
Buyers of Margaret Lomas books can download free software by following instructions at the back of her books http://www.edestiny.com.au
There is free software at http://www.ezrent.com
I downloaded from ez-rent.com. It’s not bad being free software and got almost all the thing. I used richmastery software also in their seminar that was also easy to use though its in excel only.