We are a game company about to launch 3 web-based RPG games on our platform. We will use AdWords, AdBrite and other ad agency channels to advertise. Despite the fact that these platform all provide statistics on their own. We are looking for open source or relatively reasonably priced commercial ads campaign management platform of our own to be hosted on our own servers. The main advertisement method we’re going to be doing is banner ads. We’d like to track impression, click-through, registration, payment, user page flow after clicking through the banners, etc. Can anyone suggest some platforms for us?