There are several types of files that you can use for exporting Agenda and Address Book data: vCalendar files, iCalendar files, comma-delimited text files for Agendas, tab-delimited text files for Agendas, vCard files, comma-delimited text files for Address Books, tab-delimited text files for Address Books, text files of activities by date and text files of activities by person.
Exporting a comma-delimited text file for Agendas
Exporting a tab-delimited text file for Agendas
Exporting a comma-delimited text file for Address Books
Exporting a tab-delimited text file for Address Books