Chitika is a well known advertising network which pays on Per Click Basis and can be used with Adsense already running on your blog. Their minimum payout is $10 and payment is done through Paypal or by Cheque($50).
AdBrite is among one of the biggest competitor of Google’s Adsense. It allows website owners to manually approve the ads appearing on their site. It also allows advertisers to decide which websites will show their ad.
Similar to Adsense , clicksor displays ad bases on your website content. Clicksor displays ads of different configuration like in-text, banner and pop-under. The minimum payout is $50 and payments are done by paypal.
Kontera is an in-text advertiser. It is generally best suited for websites, blogs with good number of page impressions. It highlights specific words in your article and linking them to relevant advertisers. Payment is done through paypal, cheque and Electronic Fund Transfer and minimum payout is $50.
Infolinks is mostly an in-text advertising network but they have also started adding various different ad layouts. They pay on Per Click Basis. The minimum payout is $50 and payement is donre through paypal.