From: Craig on
F/OSS & cross-platform. It requires either dotNET or mono depending on
the OS. It's a bit early to try, imo, due to a memory issue but could
be something to keep an eye on.

> Pinta is a drawing/editing program modeled after Paint.NET. It's
> goal is to provide a simplified alternative to GIMP for casual users.
> It is currently early in development.
-and-
> Is Pinta a Port of Paint.NET?
>
> Not really, it's more of a clone. The interface is largely based off
> of Paint.NET, but most of the code is original. The only code
> directly used by Pinta is for the adjustments and effects, which is
> basically a straight copy from Paint.NET 3.0.

<http://pinta-project.com/>

--
-Craig