OIO is an ad manager that enables you to maximise your revenue, save time, and keep you in complete control of your ad space. Sell and serve ads on any website, using this php ad management script. It can even be used as a Wordpress plugin right out of the box!
OpenX doesn’t reveal its pricing. Though, it has been well-documented over the internet that they charge $1000 setup fee. As per your requirement; the number of Ad impressions, the minimum monthly fee is charged. For 1 million adAd Serving Platform
Adzerk offers smooth native ad implementation and utilizes asynchronous ad codes in order to optimize speed. Post 2014, Adzerk simplified their offerings and features as per what their customers wanted. They removed a lot ofAd Serving Platform Adzerk
Epom supports Video Ad Serving and enables its customers to easily launch and manage large, complex, and deeply targeted video advertising campaigns on mobile and display within one ad serving solution. Epom Video Ad servingAd Serving Platform
You should check out AdBulter. AdButler WordPress plugin generates ad tags enabling you to configure and manage your AdButler ad zones directly from inside your WordPress administration widget area. Using the AdButler system youAd Serving Platform
Revive Adserver is a free, open source ad serving system that enables publishers, ad networks, and advertisers to serve ads on websites, in apps, and in video players. Revive Adserver is a well-known open source ad server thatAd Serving Platform