What are some alternatives?
When comparing 360 Polaris and AdSense, you can also consider the following products
MoPub - MoPub is a mobile monetization platform that helps publishers drive more revenue from advertising and mobile transactions.
OpenX - Ad technology platform available as a hosted service or as an open source download.
AerServ - AerServ offers monetization solution for mobile publishers.
AdRoll - AdRoll is a leader in retargeting display advertising. Draw the right people with the right strategies.
Google Ad Manager - Grow revenue wherever your users are with an integrated ad management platform that surfaces insights for smarter business decisions.
Epom Ad Server - An ad serving solution for publishers, advertisers, ad and affiliate networks