LifeLines is an advanced genealogical system. You can store any kind 
and any amount of data in a LifeLines database, and you can process 
and generate output based on that data in any way and in any format.

LifeLines supports GEDCOM; it imports and exports GEDCOM data. 

LifeLines has a unique approach to report generation. LifeLines has 
no built-in reports. Instead all reports are generated using report 
programs that are written in a report programming language. 

Because of its flexibility and programmability, LifeLines is frequently 
used for genealogy applications on the World Wide Web.

WWW: http://lifelines.sourceforge.net