What freeware/shareware software is available?
More than you can possibly imagine. Most of it is available via FTP on the Internet, though much of it can also be found on the web. The ZIMMERS archive is presently the largest collection: http://www.zimmers.net/anonftp/pub/cbm/geos/ Other major FTP sites include: ftp.giga.or.at/pub/c64/geos/ Also available is a CD full of GEOS files from Bruce Thomas. Information about this CD can be found on the internet at http://members.shaw.ca/cue64/CD.html.