Here is an updated download of my favorite Plugins for Paint.net.
I would list them all but the package is pretty extensive.
Also included in this zip file is a File Types folder that contains some things to run the Effects and also some stand alone things like the plugin to be able to edit PDS Files in Paint.net.For computers with older Video Cards
Updated for Newer computers with Newer Video Cards
Should work on computers 1 1/2 years old or so.
PS: The safest place to download Paint.net is directly from their download, here is a link for the safest download right from the site.
The download is in the sidebar, top right corner.