Sketch - Professional digital design for Mac.
ACDSee - ACDSee is an image viewer that uses very little system resources, and it has a small, sleek size that won't take up much space on your system.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
digiKam - Professional Photo Management with the Power of Open Source
Affinity Designer - Professional creative software, exclusively for Mac.
Flickr - image and video hosting website