XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Seer - A Windows Quick Look Tool in Qt.
Simplifi Me - Manage all social media account with Simplifi Me developed by Aggregr8tor LLC.
Eye of Gnome (eog) - Simple image viewer for the GNOME desktop.
DrumUp - Content Marketing & Social Media Management Software