WordPress ads plugin

Looking for a free or paid plugin to handle the ads on the page. I intend to advertising can be added by using widgets. In addition to this – very important for me is that the advertiser can remotely edit him ad (eg, after logging in, or using a specially generated for him link). Less care about handling ad sales, because from what I’ve seen – most of these solutions supports unpopular in my country PayPal.
I will be very grateful for any response. Thanks.