Nomacs 2.4.4 recently released, is a free image viewer for windows, linux, and mac systems, which is licensed under the GNU Public License v3. Nomacs is small, fast and able to handle the most common image formats including RAW images. Additionally it is possible to synchronize multiple viewers. A synchronization of viewers running on the same computer or via LAN is possible. It allows to compare images and spot the differences (e.
xnViewMP is the enhanced version of xnView for all platforms. xnViewMP is a powerful cross-platform media browser, viewer and converter. XnViewMP supports more than 500 image formats (including Multipage and animated still formats APNG, TIFF, GIF, ICO, etc..) and export to about 70 different file formats. Compared to xnView, considerable improvements have been made in terms of performance (speed-optimized loading, improved caching, multi-core processing, 64bits version). Install xnViewMP latest version from PPA sudo apt-add-repository ppa:dhor/myway sudo apt-get update sudo apt-get install xnview Install xnViewMP from DEB packages For 32 bit