The Fotoxx application is a free image-editing application that comes with a ton of features, including management of RAW files. It's not difficult to find this kind of applications on the Linux platform, but not all of them are good. Fortunately, Fotoxx is a more than adequate solution.
Image editing applications on the Linux platform are a dime a dozen and some of them are extremely advanced. In fact, they could probably compete with commercial applications that are available on the Windows and Mac OS X platforms. The problem is that with great power comes great complexity, and most of the users don't really want two million features when they probably just want something good and simple.
Fotoxx is situated somewhere in the middle, and it offers users a clean and simple interface. If you only want to sort some of the pictures that you just took and eventually transform them into another format, without too much hassle, then Fotoxx is just what you wanted. On the other hand, the application is perfectly capable of offering some more advanced features, but they do require some prior experience from the user.
Installation
It's quite possible to find Fotoxx in your repository, but if you're using Ubuntu, you might want to download the latest version from the official website. It's a DEB file, and it's pretty easy to install. All you need to do is enter these commands in a terminal (you will have to be root to make this work):
sudo apt-get install -f
Usage
As I was saying earlier, the application is built in such a way that some of the more obvious and used features are placed at the top, improving the usability for simple tasks. That is why stuff like Gallery, File, Save and Metadata are the first in the left-side menu. Clicking on these options will open a secondary menu, with all kinds of functions, most of which are available in other apps as well.
When we go down to the second half of the menu, we'll see that things start to get a little bit more complicated. Users can select just areas of the image, and apply all kind of filters, starting from simple stuff like Red Eye remover to vignetting, mosaic, and a ton of other stuff. There are dozens of functions, and it will take a long time to learn them all.
Among the functions you will find there are posterize, convert to drawing or painting, emboss, tiles, dots, cartoon, sharpen, clean noise, fix red eyes, adjust color, paint, HDR, HDF, panorama, mashup, and much more.