If you don’t like Google Adsense or you are banned from adsense due to some invalid clicks or by any other reason then there is no need get worried  there are a couple of other alternatives some of which are very good from asense such as adbrite which has a very marvellous cpc and you can earn alot from it !

Here are some common alternatives:

Adbrite

Kanoodle

Intellitxt

Bidvertiser

Bidclix

If you want to get an extensive list, visit here.

Some advertising options may require you to achieve a certain amount of montly pageview, let’s say 50,000+. Others might just have lenient approval rules like Google Adsense.

I found this site that compares different advertising options according to the revenue model, ad placement model, payout rate in a table. It’s really cool.

This is another site that lists out all adsense alternatives and it gives a brief explanation for each option.