Image Editors

• 
  Darktable

  Free

  An open source photography workflow application and raw developer.

• 
  Caesium Image Compressor

  Free

  Compress your pictures up to 90% without visible quality loss.

• 
  GIMP

  Free (Open Source)

  Create and alter photos and graphics manually or via scripting.

• 
  Upscayl

  Free

  Free and Open Source AI Image Upscaler.

• 
  Paint.NET

  Free

  A free image and photo editing software for PCs.

• 
  ImageMagick

  Free

  A software suite to create, edit, compose, or convert bitmap images.

• 
  Microsoft Image Composite Editor

  Free

  An advanced panoramic image stitcher.

• 
  Photoline

  Free Trial

  A professional image editor which offers creatives a mostly non-destructive workflow.

• 
  FreeVimager

  Free

  A Free & Fast Image Viewer and Editor for Windows.

• 
  AndreaMosaic

  Free

  Create photographic mosaics made with your own pictures.

• 
  CyberLink PhotoDirector

  Free Trial

  Simplified photo management tools combine with powerfully easy-to-use yet sophisticated adjustment and editing options that offer a complete, end-to-end photo editing and management solution.

• 
  DMesh

  Free

  Turns images into techy artwork.

• 
  Light Image Resizer

  Free

  Right click to easily resize pictures.

• 
  LightZone

  Free

  Open-source digital darkroom software.

• 
  PhotoWorks

  Free Trial

  Intelligent Photo Editor.

• 
  Image Resizer

  Free

  Lets you resize images by right-clicking.

   

• 
  Machinery HDR Effects

  Free Trial

  Generates fantastic effects and is unbelievably easy to use!

• 
  Pinta

  Free (Open Source)

  A free, open source program for drawing and image editing.

• 
  RawTherapee

  Free

  A free RAW converter and digital photo processing software.

• 
  Zoner Photo Studio

  Free Trial

  A true A to Z toolkit that streamlines your photography workflow and provides you complete control over your image library.