I'm mainly using Classic to keep track of bowling scores. I use
Warily Software to input all my data. There's a desktop exporter program that will convert that data into a spreadsheet file, but I need to get some PDB files out of Classic first in order to do that. The following is not quite as good as Hotsync, but works for my purposes, and is probably useful for a lot of what people want Hotsync with Classic for.
I found an old free SD backup app:
redfelineninja.org.uk > Software > RFBackup Download the latest version, and install it in Classic.
Launch Classic, run RFBackup, and click Backup. I got an error about reading Card Info the first time, but it works fine after that.
Connect the Pre to your computer, put it in USB Drive mode. I'm doing this on Ubuntu Linux, but it should work similarly with any OS. When it mounts, the backup it created is in <mountpoint>/ClassicApps/PALM/RFBackup/ ... It may be a hidden directory, so it's probably best if you just type the full path to get there.
Copy the files in there out to wherever you want, and you should be able to use any application that reads PDB files to work properly. At least it works for me, with FramesExporter for my bowling scores.