XnView

XnConvert (64-Bit)
FreeXnConvert: Powerful Cross-Platform Batch Image Converter
Windows
XnViewMP (64-bit)
FreeXnViewMP: Comprehensive Cross-Platform Image Management and Conversion
WindowsXnView Retro
FreeExplore Vintage Effects with XnView Retro
Android
Sketch Me Pro for Windows 10
PaidTransform Photos into Artistic Sketches Easily
Windows
XnView Classic Minimal
FreeXnView Minimal: Powerful Image Tool for All Formats
Windows
XnViewMP Portable (32-bit)
FreeXnViewMP: Comprehensive Graphics Tool
Windows
XnViewMP Portable (64-bit)
FreeXnViewMP: Versatile Cross-Platform Image Management & Conversion
Windows
NConvert (64-bit)
FreeNConvert: Powerful Batch Graphic File Converter
WindowsXnView Sketch
FreeTransform Your Photos with XnView Sketch
AndroidXnConvert
FreeXnConvert: Powerful Batch Image Conversion and Editing
Windows
XnView Minimal Portable
FreeXnView Minimal: Powerful Graphics Tools
Windows
XnView Extended Portable
FreeA Versatile Multi-Format Graphics Browser and Converter
Windows
XnSketch (64-bit)
FreeTransform Photos into Artistic Sketches Easily
WindowsGflSDK
FreeGFL SDK: Image Format Support for Developers
Windows
XnViewMP
FreeXnViewMP: Comprehensive Image Management Suite
Windows
XnView Shell Extension (64-bit)
FreeXnView Shell Extension: Enhance Your Explorer Workflow
WindowsGFLAx
FreeGFLAx: Powerful Image Management Component
Windows
XnSketch (32-bit)
FreeXnSketch: Transform Photos into Artistic Styles
Windows
XnView Shell Extension Portable (32-bit)
FreeXnView Shell Extension: Enhance Your Explorer Workflow
WindowsXnConvert
FreeImage converter: resize, add watermark, adjust levels, apply filters and many other things.
Mac
NConvert
FreeEfficient Batch Image Processing with NConvert
WindowsNConvert for Linux (64-bit)
FreeNConvert for Linux: Versatile Image Converter
LinuxGFLAx light
FreeEasily Add Image Format Support to ASP Projects
Windows
XnView Classic Extended
FreeXnView Extended: Powerful Graphics Toolkit
Windows