Fotoxx is an open source photo editing program, working on Linux. It has support for the most important image formats, including JPEG, BMP, PNG, TIFF and RAW. Fotoxx is mostly used for cropping, resizing or retouching photos, without using layers, like Photoshop.

The latest version available is Fotoxx 16.04, which brings the below changes:
- Initial file indexing was made faster by running metadata extraction and thumbnail creation in parallel. Speedup: 11% for 7200 rpm disk and 60% for SSD.
- New image sharpen method: median difference: like unsharp mask, with less halos.
- New slide show transitions: spiral, french door.
- Bugfix: crash in panorama “flatten” function if image is too large.
- Bugfix: failure of Add Lines function in rare cases (arcsin(1.000000x)).
- Workaround: If an image file that is used in albums is renamed or moved, the album image goes missing. There is no way to fix this, but now a report of the missing files is shown before they are purged from the album. If files are renamed or moved using the Batch Convert tool, then albums are correctly updated.
Installation instructions:
Fotoxx is available via a third party PPA, maintained by Dariusz Duma, so installing Fotoxx and keeping it up to date is quite a piece of cake.
So, in order to get the latest Fotoxx version on Ubuntu 16.04 Xenial Xerus, Ubuntu 15.10 Wily Werewolf, Ubuntu 14.04 Trusty Tahr and derivative systems like Linux Mint 17.3 Rosa, Linux Mint 17.2 Rafaela, Linux Mint 17.1 Rebecca, Linux Mint 17 Qiana, Pinguy OS 14.04, Elementary OS 0.3 Freya, you have to add the PPA to your system, update the local repository index and install the fotoxx package:
$ sudo add-apt-repository ppa:dhor/myway
$ sudo apt-get update
$ sudo apt-get install fotoxx
Optional, to remove fotoxx, do:
$ sudo apt-get remove fotoxx
Also, if you want the latest version of Fotoxx on your Arch Linux, Manjaro, Antergos, ArchBang or other Arch derivative, you can install it via AUR:
$ sudo yaourt fotoxx
Optional, to remove Fotoxx, do:
$ sudo yaourt -Rsn fotoxx