FastPictureViewer is designed for professional photographers needing advanced metadata handling and batch processing, while Xee focuses on user-friendliness and built-in editing tools, catering more to casual users.
Xee
Pros:
User-friendly interface
Fast loading times
Supports RAW image formats
Built-in image editing tools
Good organizational features
Cons:
Limited support for certain file types
Higher resource consumption
Some advanced features are paid
FastPictureViewer
Pros:
Fast and efficient image viewing
Supports a wide range of file formats
Advanced metadata handling
Highly customizable interface
Batch processing capabilities
Cons:
Limited editing capabilities compared to some competitors