Webmasters-central.com :: Submit Your Internet Marketing Resource. Webmaster Resources, Articles, Tutorials and Tips on Online Marketing.

PHPTraK is a simple PHP script that can track an unlimited number of clicks/links. It uses text files to store its data, therfore requiring no database. It has a URL filter and a referal filter to block unwanted clicking. It can even track URLs that themselves contain query strings. It also tracks the time of the first hit and the time of the most recent hit.
Price: Free for noncommercial use

Want to know how to make your visitors become customers? With The ROI (Return on Investment) Tracking Pro you will be armed with full set of detailed reports about profitability of your online advertising campaigns. The tool is suitable for tracking any Internet campaigns and could monitor multiple sites. It’s featured with easy-to-use Web interface and campaign wizard. No more money wasting, this product will show you the way to push up your sales!
Price: $59

tClick is a set of PHP3/4 scripts designed to provide easy to use tracking of click-throughs of specified links on a website. The system's backend is provided by a MySQL database, and support is included for addition, deletion, and viewing of link statistics through a web interface asboth individual links and by categories. tClick is designed for people who either don't have access to their site's weblog, or for those who don'twant to bother with complex log analysis programs. tClick is licensed under the GNU GPL. 0.93b Release This release adds a much improved UI and data import/export to tClick.
Price: Free (GPL)

Uresk Links is a simple, easy to use link tracker written in PHP. Uses MySQL as a backend. Enhanced version available.
Price: Free

Easily track your clicks with this script. Includes a module for SE friendly links. Links can be categorized to make viewing stats easier.
Price: 26.95

Web-Mylink is your web site link management system that can track all actions and interest of the web site visitors. Web-Mylinks is a powerful tool for counting and analyzing the visitor's clicks on your web site links . The statistics is registering each link as well as link groups (Time lags: hours, days, months, years). Allows tracking visitor's clicks on any link (text or image, internal or external) on any page of your site.System requirements: PHP and MySQL.
Price: $18.95

Monitor adsense, email and sms updates, db log of daily activity and adsense sandbox.The adsense preview allows you to see what you or your competitor's ads would look like if you used adsense.Tracking adsense was never easier!
Price: GPL