FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
RePix - RePix helps you in batch resizing any image into a preset resolution and save it easily and quickly.
IrfanView - IrfanView ... one of the most popular viewers worldwide.
Waterlogue - Magically turn your photos into watercolor paintings.
Photoscape - high quality photo editing software, that enables you to fix and enhance photos.
NeonCam - Neon, cyberpunk and vaporwave camera.