Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Polarr - MacOS, Windows, iOS, Android and online photo editing tools & free photo editors.
Fotor - Fotor is an all in one visual platform. It includes photo editor, collage maker, and graphic designer. You are free to make a visual look more beautiful.
SpotiPlus - SpotiPlus is a feature-rich application that lets you create cover arts for Spotify playlists and increase your fan following.
GIMP - GIMP is a multiplatform photo manipulation tool.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.