Bitpoem - Amazing effects and textures for your photos
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Stackables - Advanced and comprehensive effects layering and blending app
GIMP - GIMP is a multiplatform photo manipulation tool.
Readymag - Readymag is a design toolkit that helps create immersive digital experiences without developers in days, not weeks.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.