Automotive System

http://www.wheelsforyou.com/ (National)
http://qc.wheelsforyou.com/ (Quad Cities)
http://rvng.wheelsforyou.com/ (La Crosse)

The automotive system was written so that newspapers could create partnerships with local dealerships to create revenue for each. The system handles many types of feed format via a class-based data abstraction API layer I've also designed to handle feed sources much like device drivers. The output is generated by a centrally-installed collection of PHP scripts and libraries and is fully templatable. As can be seen with the examples, anything can be customized.

Business Directory System

http://www.newszap.com/yellowpages2/

This system follows both the SIC category format, and allows newspapers to deviate for proprietary directory software. This engine uses a token language to create pages, and implements a cache to reduce the necessity of retrieving the fairly static listing data. The back-end importing and data feeding system is written entirely in Perl modules and implements a driver-based system to handle multiple feed formats.