Try
www.psamsoftware.co.uk , Psam Free Edition, not a trial, not time limited and is FREE.
Software has been around since 1998 in one form or another but generally avaliable since 2006, used by Chem-Dry's and independents. Free Edition made available last week!
I have to declare my interest though, we're the developers, and we're carpet cleaners too, this was developed by us for our business. If this is in breach of listings then applogies, please pull this post.
This website is only a week old, so apologies if it falls down while we're updating it.
Allan.