Simple, but very useful and powerful plaugin, which adds to your WordPress-powered website a special widget which can show unlimited banners in any siderbar of you theme.
All you need to do is to place it in the right place, add title, URL of the banner’s image and your affiliate link.
Features:
<ul>
<li>Unlimited banners to any sidebar of your website;</li>
<li>Show up any .jpg, animated .gif or transparent .png image;</li>
<li>Customize the width of every banner with ‘width’ parameter. No need to fill in the height.</li>
</ul>
Ownyourblog Banner Widget is bulletproof solution tested on many blogs.

Ownyourblog Banner Widget

Simple, but powerful widget to show any banner you want in your sidebar. One-click solution!

Radek Mezulanik

Show partners logos in widget area. User can click on logo to open partner URL. 
You can choose page layout when creating new page, so new partners page will look like responsive mosaic.
Check out Partners Banners Pro <a href="https://mezulanik.cz" rel="nofollow ugc">features</a>.

Ownyourblog Banner Widget vs Zedna Partners Banners