Focos - Your Portrait Mode photos become amazing masterpieces of art
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Lightsynth - The first camera which supports mobile ADR - Adaptive Dynamic Range, Lightsynth lets you have done with all kinds of exposure trouble under various tricky lighting situations such as daylight skies, backlit, or low-light.
GIMP - GIMP is a multiplatform photo manipulation tool.
Manual Camera for iPhone - Custom exposure for your iPhone camera
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.