twapaw

Opes WP Ads Manager is a simple plugin that allows you to show advertisements as a widget on the website
 Just works! 
Major features in Opes WP Ads Manager include:
<ul>
<li>Since version 1.2.0 only one widget can be add and only two ads can be shown</li>
<li>An ad as a custom post type</li>
<li>An every ad can link to specific web page</li>
<li>A widget generator</li>
<li>A custom post featured image used as an ad</li>
<li>Ad sizes management (use Regenerate Thumbnails plugin to extend management of the sizes image files)</li>
</ul>
PRO Version (available soon) features:
<ul>
<li>Stats</li>
<li>Not limited widgets and ads can be add</li>
<li>Management of order of ads in a widget</li>
</ul>

Opes WP Ads Manager

Opes WP Ads Manager allows you to show advertisements on the website

karacsi_maci

Banner Garden Plugin for WordPress is (as the name is) a very usefull banner / ad rotator script.
You can use it ANYWHERE on your blog. With a simple shortcode, you can insert your flash, image, or html code (like google adsense) into your posts, sidebar through widgets, header, or anywhere you want. Read the usage section later.
You have to do nothing else, just install this plugin, go to the Banner Garden settings page, create a campaign, add banners to your campaign, and place a little code like this [bannergarden id=”3″] into anywhere in your blog.
This is the lite version of Banner Garden, it’s free to use. I plan, i will write a pro version with much more options, but this is the future.
Features and Benefits:
<ul>
<li>Create any campaigns</li>
<li>Optionally you can set the start and/or the end time of a campaign</li>
<li>Flash, image and ad code banners</li>
<li>Rotate banners randomly</li>
<li>Default banner if a campaign expired or file or campaign not exists. (You canturn this option on/off).</li>
<li>Uses the WordPress Media Library for uploading or selecting flash/image</li>
<li>You can add campaign to sidebar through widgets.</li>
<li>Place campaign anywhere in your blog.</li>
<li>Include a test flash and a test image banner</li>
<li>Localization in .po/.mo files. (Hungarian localization included).</li>
</ul>

Banner Garden Plugin for WordPress

This plugin is a campaign and banner manager for wordpress.

Opes WP Ads Manager vs Banner Garden Plugin for WordPress