YAC (Yet Another Counter) is a Web counter and logger written in Perl. It counts only "real" visits, meaning that it increases the counter only if there was no request from the same IP within one hour, but logs every page hit. It has 3 output modes (graphic, text, quiet) and a configurable minimum number of digits displayed. To avoid corrupt data it uses flock() for all file operations.
LogJack extracts page view/file download counts and other information from Web server logs, and places the information in individual files for easy inclusion into dynamically-generated Web pages. After generating the initial data, LogJack continues to monitor things and update its files and reports.
Web Log Trends Analyzer provides a work-around for a "bug" in some popular commercial Log Analyzer products, which makes them unable to process multiple log files for overlapping periods of time. If you like your commercial Log Analyzer, and don't feel like upgrading just yet, this little Perl script will do the trick nicely. Simply specify a list of all your log files, and it will consolidate them into a single log file, sorted by time. The output log will work with your commercial Log Analyzer product without a hitch, allowing you to continue using it to generate reports.
nms is a set of drop-in replacements for the CGI scripts found at Matt's Script Archive. They have been developed from the ground up to emulate their behavior, but in many cases are better written and more secure. The collection includes form mail, guest book, simple search, and counter scripts.
asRep is a Perl/PHP script with a MySQL back-end for tracking and reporting the activity of Google AdSense ad units, which Webmasters publish, in real- time. It tracks up to 3 ad units per page. It reports the impressions, clicks, and CTR for publisher domains, directories, and pages, for the referrer domains and pages, for clicked ad URLs, for AdSense channels, for ad unit colors and formats, and for visitor IPs and countries. Log reports show the details of every impression and click. A report emailing feature is included to periodically receive the recent reports.