Here are the best sites for software for classic Macs. They are great on emulators. I tell you how to put them on a disk image on my instructions page.
If you have any other good links, e-mail them to mee (see the contact page)
The vMac Application Site
Drinn's Info and Tools (VERY good site- especially if you don't own a ROM image...)
System 6 Heaven
Home Page of Gamba
Beginner's Guide to Emulating a Macintosh