Tag That Photo - Your Photos in Your Control by Tag That Photo Software. Face Recognition, Privacy, Tagging and more.
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.
digiKam - Professional Photo Management with the Power of Open Source
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.
Flickr - image and video hosting website
XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!