PDF Converter on Linux/Redhat

[James Pifer <jamesredhatlist obrien-pifer com>]

Sorry if this has been asked before. I'm looking for a PDF converter
that will run on Linux for a web application. I did some googling and
found some that did specific things, like postscript to PDF, but not
enough. 

There are some apps that run on Windoze that will convert html, word
docs, excel docs, text files, JPG,  etc to PDF. I'm trying to find one
that will do these conversions on a Linux machine or else I'm going to
be stuck running Windoze.

Any help is appreciated. Thanks,
James