This is a list of photo editing software that you can use for free that you can use on Macs, this list includes software that is specifically for Macs and as well as online photo editors.
This list only includes web design tools that are free to use, but does not include tools that offer free trial versions.
Pixlr
Website: Pixlr.com
Pixlr is a free photo editing and design tool that is web based and is really easy to learn how to use.
Price: 100% Free
DarkTable
Website: DarkTable.org
Download: darktable.org/install/
DarkTable is a free photo editing software that is available for download for Macs.
This is from DarkTable’s website:
“darktable is an open source photography workflow application and raw developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images and enhance them.”
Price: 100% Free
GIMP
Website: GIMP.org
Download: gimp.org/downloads/
GIMP is a free and open source photo and image editor. It is available for GNU/Linux, macOS, Windows and more operating systems.
Price: 100% Free