RawTherapee - RawTherapee is a free RAW converter and digital photo processing software.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Darktable - darktable is an open source photography workflow application and raw developer.
GIMP - GIMP is a multiplatform photo manipulation tool.
digiKam - Professional Photo Management with the Power of Open Source
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.