Ad-Engine lets place ads anywhere in wordpress via widget or shortcode. It tracks impressions and clicks.

The Datafeedr Random Ads V2 plugin allows you to simply and easily show random, rotating ads anywhere on your site by adding a template tag to your theme's template files or using widgets.

easy ads is a free advertisement plugin to manage , add and remove ads easily way to wordpress.

Display a Floating Banner Advert Rotator Box at the Bottom of Your Site. Track Advertising Banner Views, Clicks and More or add Custom HTML.

This plugin includes user Ads code to post or webpage after first paragraph with additional feature of sticky Ads bar in sidebars.