gThumb is described as 'Image viewer and browser for the GNOME Desktop. It also includes an importer tool for transferring photos from cameras' and is a very popular Image Viewer in the photos & graphics category. There are more than 100 alternatives to gThumb for a variety of platforms, including Windows, Mac, Linux, Flathub and Flatpak apps. The best gThumb alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try IrfanView or XnView MP. Other great apps like gThumb are digiKam, nomacs, FastStone Image Viewer and qView.
First Impression is a free and minimal image viewer with a focus on maximizing the space used for viewing your images by doing away with command bars and buttons. First Impression is controlled entirely by keyboard shortcuts and a small menu accessed by right clicking on the...
FFView is a fast OpenGL-powered picture viewer. It is aimed at letting you read comics onscreen (windowed & fullscreen mode).
Sequential is an image viewer for Mac OS X. It was originally designed for opening a folder of images and displaying them in order. It works well for viewing comics and manga.
United States
With BIMP you can apply a set of manipulations to an entire group of images! It provides an easy to use interface and a lot of batch functions.
Italy
EU
GImageView is a yet another image viewer which solves hopless situation under displaying a lot of images. It provides not only viewing image function but also managing image files function which looks like expolore of MS-Windows or tabbed web browser.
Paul's Graphic Viewer is an inexpensive, high speed 32 bit Windows graphics viewing and processing program. It is designed for fast processing and contains many functions only found in far more expensive programs.
gtkam is the official GTK2 GUI for libgphoto2. Its purpose it to provide a standard client for libgphoto2 aimed at GNOME users. Consider it as a reference implementation for a graphical libgphoto2 client.
FranceEU
LeafView is a lightweight, cross-platform image viewer with smooth zoom, folder browsing, and grid view, built with Electron and Leaflet.js.
Japan
Madamiru is a cross-platform media player written in Rust that can automatically play and shuffle multiple videos, images, and songs at once in a grid layout.
Pix-Cull helps photographers, creators, and visual teams quickly cull large image sets by finding the strongest shots and removing duplicates, blur, and low-quality frames.
South Korea
