XnView
XnConvert
FreeImage converter: resize, add watermark, adjust levels, apply filters and many other things.
Mac
XnView Retro
FreeTurn your photos into vintage images.
Android
NConvert (64-bit)
FreeNConvert: Powerful Batch Graphic File Converter
Windows
XnView Shell Extension (64-bit)
FreeXnView Shell Extension: Enhance Your Explorer Workflow
Windows
XnViewMP Portable (64-bit)
FreeXnViewMP: Versatile Cross-Platform Image Management & Conversion
Windows
XnView Extended Portable
FreeA Versatile Multi-Format Graphics Browser and Converter
Windows
XnViewMP
FreeXnViewMP: Comprehensive Image Management Suite
Windows
Sketch Me for Windows 10
FreeTurn your photos into drawing, cartoons or sketch images in one click to create instant works of art.
Windows
GFLAx
FreeGFLAx: Powerful Image Management Component
Windows
Sketch Me Pro for Windows 10
PaidTurn your photos into drawing, cartoons or sketch images in one click to create instant works of art.
Windows