- It just works! It has plenty of tools to edit and improve the quality of your photos. - Its architecture allows the creation and use of plug-ins to do interesting things (like filters, automatized work-flow operations, etc). - It's free software, so you can download, install and use it with no worries about what the license allows and what doesn't. - It's multi-platform, so you can install and use it on Windows, MacOS X, GNU/Linux up to Sun OpenSolaris and FreeBSD. - It's lightweight and it's hardware requirements are not high.

The best thing is obviously that GIMP is free. But still it is kept up to date, for example it supports the new image format AVIF that other competitors do not support. GIMP has lots of features and I did not found anything I could not do with it. The community is really big, so if there are some issues you've just to ask for help and someone is always there happy to help. Moreover you can install GIMP on your operating system of choice, since it is available on Windows, Mac and Linux.

GIMP is a great free tool for photo editing and digital artwork/painting. It provides all the basic editing tools like layers, transparencies, effects, and brushes; as well as photo editing tools like brightness, saturation, exposure, curves, etc. The open-source nature of the software is ideal for students, freelancers, and those who are new to digital editing. I think GIMP is most useful for the ability to quickly resize/crop images, convert between file types, and make small photo touch-ups at no cost.