Many companies use this software for editing photos.
I use this for our company work and this works perfectly for image editing process.
GIMP - GIMP is a multiplatform photo manipulation tool.
Frost for Facebook - Frost is a third party Facebook wrapper geared towards design and functionality
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Tinfoil for Facebook - Download Tinfoil for Facebook app for Android. Tinfoil for Facebook is for those users that require a Tinfoil hat. .
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.
Friendly for Facebook - Friendly is the most complete Facebook Lite and FB Messenger alternative.