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.
PowerSchool - PowerSchool provides a K-12 education technology platform for operations, classroom, student growth, and family engagement.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.
Clever - syncing between education applications for K-12 schools
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.
Claroline - Claroline is a collaborative eLearning and eWorking platform.