Exists a Paint.NET choice?
There's Pinta as David mentions, which duplicates the interface and also took the very same open sourced code to implement photo adjustements and also results. There are various other light-weight choices that could fit the costs if you do not call for attributes such as layers or filters : Gnome Paint and also KolourPaint for KDE.
The Gnome Paint website organizes a DEB documents, so you can download and install that and also double click to install. To install KolourPaint:
sudo apt-get install kolourpaint4
Or look for it on the Software Center. Keep in mind that if you do not presently have any kind of various other KDE application, after that mounting KolourPaint will certainly additionally install various other KDE details collections that will certainly take a substantial amout of disk room. That being claimed, I located KolourPaint even more attribute full than Gnome Paint.