Google Adsense is one of best monetization platform for publishers to earn maximum from their content, it is basically a PPC ad network which pay publisher when he/she receive real click from any person, its industry leading ad network for last fifteen years.
Chitika is also a famous platform for publishers to earn money from their website and blogs, it is also PPC ad network, mostly it is used by people who fail to qualify for google AdSense because of strict Google policies.
Both of these networks are doing well for last years, but it would be difficult to say that Chitika is good alternative to Google Adsense because of their low CPC and fraud, still you can use Chitika if you AdSense account is not approved by Google, below is quick shot to know more about these networks.
|Account Approval||Hard For Asian Publishers||Easy for everyone|
|Stats||Complete statics||Just CPC & Traffic stats|
|Ads Type||PPC, CPA, CPM, VPAiD||CPC|
|Ads Design||Attractive (Image, Flash, Video)||Horrible (Text & Image)|
|CPC||Average 0.15$ and maximum 60$||Average 0.02$ and maximum 2$|
|CPM, CPA, eCPM, RPM||Good||Average|
|Payments||On Time||On Time but many time account closed at same day|
|Payment methods||Cheque, Wire Transfer, EFT, Western union||Paypal only (not available in some countries)|
|Fill Rate||100%||Good For US/CA Traffic & Low for other countries|
|Websites supported||All legal sites which include blogs, websites & online tools sites.||Mostly content based sites|
|Support||24hour response time through email for people earning more than 25$/week||Email Support for everyone|
My opinion: Adsense is undoubtfully the best network of time but it if your site does not meet their requirements you can use Chitika, it work well for sites having the majority of traffic from US & Canada.
I have used this network just for testing purpose and had earned 100$ with them but when its time to pay they have closed my account without any reason, I contacted support and they never replied me back, so only use at your own risk, there are many other alternatives of Adsense in market which are working well like Media.net, Taboola, etc you can use them too, if you want.
Also Read: Taboola Vs Outbrain Vs Adsense