Geolog is a Perl script (also available as a Windows program) that you can use to generate HTML pages from Geocaching information such as Groundspeak's pocket queries in a rather flexible way by using templates. An example is my Geolog website: http://felias-fogg.de/. One particular use of Geolog is the generation of statistical summaries such as http://felias-fogg.de/stat.html. Geolog also assists you in downloading log photos of your logs and in incrementally updating you database.
The most recent version is 2.85 (10-09-2013):