Paid gThumb Alternatives for Windows
gThumb is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The most popular Windows alternative is 
IrfanView. It's not free, so if you're looking for a free alternative, you could try 
digiKam or 
ImageGlass. If that doesn't suit you, our users have ranked more than 50 alternatives to gThumb and loads of them are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to gThumb are 
XnView MP (Free Personal), 
FastStone Image Viewer (Free Personal), 
XnView (Free Personal) and 
JPEGView (Free, Open Source).
- ACDSee is a complex, multi-purpose application that serves for viewing, organizing and editing digital photos.
- Your Lightroom® and Photoshop® alternativeZPS X is the most universal photo software there is. RAW processing. Layer support. Presets. Retouching tools.
- Photo management software that makes it easy to view, sort and organize thousands and thousands of your digital photos. .
- FastStone MaxView is a fast, compact and innovative image viewer that supports all major graphic formats. Its intuitive layout lets you view images in a variety of ways.
- FastRawViewer is an extremely fast RAW image viewer that allows the user to see the real RAW-data and the real RAW histogram, and it supports virtually every camera format...
- A pro tool for photographersMake sure your photo database is safe and efficiently managed.Uncompromising performance
- Vliv is a Windows application that allows interactive viewing of gigantic TIFF images.Vliv is known to have successfully displayed a 121600x97280 image.- Requirements
- ThumbsPlus is a highly customizable image database with thumbnails and batch editing.
- Paul's Graphic Viewer is an inexpensive, high speed 32 bit Windows graphics viewing and processing program.
- ExifPro is an application meant to display, manipulate and browse photographs. ExifPro can display images in different view modes.