Which are the best alternatives of Google Adsense for online marketing?

Google Adsense is the most high paying adsense revenue sharing option. There are other comparatively less rewarding options to earn like Kontera, Chitika, etc. Also, one can opt for affiliate marketing via Flipkart and similar other websites. There are numerous such options available for online marketing and one can get involved in as many as they want to earn more.

There are a number of good ad network available at present time but they are not comparable to Google adsense. You can choose Chitika, Infolinks, Kontera, Yahoo Bing Adnetwork, Buysellads etc as alternative to Google adsense. For affiliate marketing you can choose Flipkart, Tradus.com, Indiatimes Shopping, India Plaza etc. You can go for flipkart affiliate programme because it provides high conversion ratio as compared to others.

Affiliate Programs work only when you target customers who have a habit of buying via online shopping portals. So, you may not specifically determine such users. So, if you are a newbie in this blogging field and if your blog or website reaches more than 1000 organic page views per day, you have several best alternatives to Google AdSense.
The first is BuySellAds, it is a place where you can sell or buy Ads. Since you are a publisher, you should sell ad spaces on your website. The selling process is categorized into four types. If you are new, you'll be making i.e. selling Ad spaces worth $1000 to $10000 per month; if you are a medium publisher you can sell around $10000 to $50000 per month; if you own a huge website with good traffic figure you'll sell ad spaces around $50000 to $200,000. And the final category is media and high profile sites which sell more than the figure $200,000 or even more. BuySellAds is a reliable and trusted Ad network by thousands of publishers.
Coming to your topic affiliate networks, Flipkart, Amazon Affiliate are the best and also popular. Earnings from Affiliate networks may not be that easy as earnings from AdSense and other Ad networks. There is a logical reason behind this; your affiliate earnings will not depend on your traffic(depends on the mood of visitor whether to purchase a product online)and they vary greatly from month to month.
Also you can go for intext Ad networks like infolinks, kontera, chikita and you may not earn better if you have low traffic.

Have you heard about "Clickbank"? It is one of the most trusted affiliate commission program on the net. Clickbank pays highest commission of 70% commission for each sale.

I suggest you sign with clickbank, choose the digital products related your website content. Place affiliate link(hoplink) on your website. you can choose the product from this website by using gravity, which gives products with more sales.

Google AdSense is one of the best ad network specially for Indians. You can try to use other networks like Yahoo (Media.net) Ads. They are also very good but from my experience the revenues will be lower than AdSense. You can also try alternative ways of monetizing like affiliate marketing, writing sponsored reviews etc.