GAdmin-Antivirus is a fast and easy to use GTK+ frontend for Clamav antivirus. Multiple scan sets can be scheduled to run at specific times via cron. Each of these scan sets can contain multiple directories to be scanned.
Paperwork is a GUI to make papers searchable using OCR.
The basic idea behind Paperwork is "scan & forget" : You should be able to just scan a new document and forget about it until the day you need it again.