All palmtop files here are compressed using the .zip format. If you're using a Macintosh, Aladdin's freeware StuffIt Expander can expand these files. On Psion/EPOC machines, you'll need a commercial program such as RMRzip. On Windows platforms there are a number of options of varying quality.
Most contact managers, spreadsheet programs, and database programs can import tab-delimited files. On Psion/EPOC machines, the programs Contacts, Data, and Sheet can all import these files. Use your favorite.
On Palm devices, you'll need to import the file using Palm Desktop, and then hotsync. For details, ask a Palm user.
Aportis files can be read directly on Palm devices using AportisDoc. On Psion/EPOC, you'll need the freeware EBook application.