Rotator  

Rotator can host images or use remote images. Rotator can rotate your images randomly or in sequence with optional delays. Stats for groups and images, include the number of views, total click-throughs and unique click-throughs and click-through Tracking. Rotator also gives you complete control of all image settings and ultra-fast tracking code.

Hosting Requirements: PHP 4.1.2+
Database: MySQL 3.23.45+
Price: $14.95

   Ad-Stream  

Ad-Stream is a feature-rich online advertisement manager developed with PHP while encompassing the power of a MySQL database. Whether you manage advertisements for 1 website or 100, Ad-Stream is the complete, scalable ad manager featuring lightning fast speed, extremely detailed graphical statistics, and un-matched administrative control and customisability.

Hosting Requirements: Apache 1.3; PHP 4.01+
Database: MySQL 3.23+
Price: $80

   Esvon Ads  

Ad management system with paid advertisers support. Features: Banners Weighting - Regular and HTML banners support - Multiple banner sizes groups - Banners targeting - Statistics pages - Textrow under banner support - Advertisers management - Supervisor and advertisers accounts - No repeating banners on the same page - Paid advertisers support (based on term, clicks, expressions) - Multiple advertising plans for advertisers - Advertisers mass mailing.

Hosting Requirements: PHP 4.x; Zend Optimizer
Database: MySQL 3.23.x
Price: $99.95

   NKAds  

NKAds is a PHP/MySQL driven banner management system. Supported banner formats: GIF, JPG, png, BMP, SWF , HTML or Pure Text. Features: versatile administration, statistics by banners and clients, password recovery, automatic installation, database optimization and more.

Hosting Requirements: PHP
Database: MySQL
Price: Free

   Geo-Ads PHP Pro  

Powered by a sophisticated database Geo-Ads PHP Pro uses a surfer's IP address to extrapolate with solid accuracy what country they are visiting from and serve them with specific targeted information. Webmasters have the flexibility to choose to serve users advertisements of any kind. Be it entire webpages, small text ads or even snippets of dynamic code (PHP, Javascript, etc.).

Hosting Requirements: Apache; PHP 4.1.0; ionCube
Database: MySQL 3.23+
Price: $65

   Ad Peeps  

Ad Peeps is fast and reliable banner rotation software that allows you to rotate and track a variety of banner ads, rich-media ads, and text links on your website. This powerful banner ad software provides highly detailed statistics to you and your advertisers and capable of delivering 500,000+ impressions per day on a typical shared web server.

Hosting Requirements: Unix
Database: MySQL
Price: $50

   obieAD  

You can manage your own ADvertisement system width obieAD. Fully admin interface. Using two database to store new users and members. No SQL database required.

Hosting Requirements: PHP
Price: Free

   Rotating Advertisement Script  

With this PHP script, you'll rotate ads in random order on your website. This ad rotation script can handle banner advertisements, text-based ads, etc.

Hosting Requirements: Apache
Price: Free

   Random Ad  

Random Ad is a simple PHP ad rotator. It reads a file which contain the ads' HTML code on your site and pick one randomly. You can put as many ads as you like into the file. To use it, just include a small piece of HTML code in your pages!

Hosting Requirements: PHP 4
Price: Free

   phpAdManager  

A handy, easy to use tool for managing the banner ads shown on your site. Features: Data is stored in a MySQL database - Full instructions are included - Easy to easy interface - use graphic or or html based ads activate / deactivate individual ads as required - full statistics.

Hosting Requirements: Linux, Windows
Database: MySQL
Price: Free