"To help you get started on the process, here are 101
open source enterprise applications.
"Note: Enterprise applications can be very difficult to
categorize. The features that one group calls "customer
relationship management," another group may call "sales force
automation." And terms like "content management" and "groupware"
mean very different things to different people.
"In addition, many of these apps combine multiple functions in a
single package. For the purposes of this list, we tried to
categorize applications as they described themselves. Applications
that didn't fit neatly into a single category ended up in the
"Business Suites" category."