showFoto - ShowFoto is the standalone image editor of the digiKam project.
Crossroad - Don’t chase after your friends’ pictures anymore
PixBuilder - Free Photo Editing Software for PC
iNZDR - iOS Live Photo Social Media app. Post and watch!
PhotoDemon - Lightweight portable BSD licensed photo editor for Windows focused on performance and usability.
One Touch Share App - Streamlined photo and video sharing made interesting