Photo Mechanic - Image browser and workflow accelerator.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
MediaHaven - MediaHaven is a media asset management platform that helps to manage, distribute and archive digital media content.
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
ACDSee Photo Studio - ACDSee becomes ACDSee Photo Studio — ACDSee Photo Studio Standard 2018 continues the ACDSee legacy
IrfanView - IrfanView ... one of the most popular viewers worldwide.