Tiger's Spotlight - Simplicity with Room for Improvement "While I'm not doubting the success of Apple marketing this as a world-class search tool, from what I know today, there are some shortcomings:
* Only one Importer registrable per File type (.extension) system-wide.
* No daisy-chaining of Importers.
* Very limited amount of data to be stored in dictionary per file.
* No built-in capability to index the content of compressed files like jars, zip, tar etc."
Follows a recent article Apple details plans to Spotlight desktop search. If you want to try something similar there's also Quicksilver which runs on 10.3 and comes with a Spotlight plugin called Flashlight.