Adsense is the best ppc on the market. It doesn't require downloading anything. Just adding it's snippet of html code onto your pages. Some adsense alternatives are Bidvertiser, Adbrite, and Chitika You can also use this service to work with several advertising companies at once: http://direct.rightmedia.com/ All is free and requires no downloading.
It would be helpful if you understood what the OP was asking for before posting a reply. I believe he is looking for software to manage his PPC campaigns...... To the OP You can easily use the Adwords interface to manage your campaign since all of the tools are basically the Adwords interface redesigned to look pretty, Most autobid tools hurt more than help and adding in a piece of software just adds another step to your process.
For me Kontera pays very less $0.01 per click with around 10K impression. Anybody suggest someother way to monitize those impressions, please.