Adbrite
AdBrite serves ads on 112,009 sites, according to their published
stats, and is the 10th largest ad network on the Internet, according to
Media Metrix. Attributor survey ranked AdBrite as the 6th largest ad
server in 2008 with a 2% share of the market.
Chitika
In 2010 Yahoo! closed their AdSense competitor Yahoo Publisher
Network Online (YPNO) and subsequently recommended publishers migrate to
Chitika as a replacement. Chitika offers search-targeted advertising
solutions. The ad units can be used on websites alongside with Google
AdSense or as an AdSense alternative.
Clicksor
Clicksor is a contextual advertising network which functions by
allowing advertisers to match pre-selected keywords or channels within
particular internet content. The advertising formats include inline text
links, banners, graphical and rich media banners and pop-under ads.
Payment for these ads may be on a CPC, CPV or CPM basis. The minimum
charge for advertisers is $20, and the minimum payout for web-content
publishers is $50. Clicksor claims to be able to target via
time-targeting and geographical targeting, in addition to their keyword
based system.
Bidvertiser
A professional contextual advertising network that Offers only
contextual and feed advertisements. It is very similar to Google
AdSense. Displays textual ads depending on content of your site [context
related ads]. You will not get enough earnings until unless you get
very good traffic. Best for high traffic blogs.
Infolinks
Specialized in In-Text advertising Infolinks indexes your page
looking for keywords and phrases that are not currently linked and
converts those words into advertising links. Best thing is that you can
use Infolinks ads to compliment your other advertising programs.