"An address book is an application that helps you manage your
names, phone numbers, email addresses and so on. They are usually
relatively simple and often integrated into larger office
productivity products. You might relate an address book in Linux to
a Rolodex. Also, address books tend to reside on an individual
machine or workstation.
"It's also possible to have an address book function in a larger
CRM (Contact Resource Manager) system. These systems allow multiple
users read and write access to names, phone numbers, email address
and so on, with the data usually living on some type of
database/server backend. People from all over your company would
have access to the data contained in a CRM.
"For the purposes of this article, we'll stick with the normal
address book programs that would be available on a person's Linux