The Lightzone photo editor http://lightzoneproject.org/ is quite nice. I was just able to successfully install it on Mageia3.
To install go to ftp://ftp5.gwdg.de/pub/opensuse/repositories/home:/ktgw0316:/LightZone/Fedora_19/i686/ and download the lightzone-4.0.0-18.1.i686.rpm package. The other packages should be available from Mageia. You probably will not need the devel and debug packages. You will need to install the lightzone package with the --nodeps flag since there are some minor library differences between Fedora and Mageia. But for me the whole thing just worked and I am very happy with it.