Clotski is described as 'Browse and share images directly from your menu bar. Add tags, search, and drag images effortlessly while maintaining full keyboard control' and is a Image Viewer in the photos & graphics category. There are more than 50 alternatives to Clotski for a variety of platforms, including Windows, Linux, Mac, Flathub and Xfce apps. The best Clotski 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 Clotski are nomacs, FastStone Image Viewer, qView and XnView Classic.
Native macOS app for viewing, annotating, and editing images and PDFs, featuring tools for cropping, rotating, resizing images, rearranging pages, full-screen viewing, markup, document merging, batch conversion, and export in multiple formats.
United States
Fly Photos is one of the fastest photo viewers built for Windows, designed as a modern replacement for the now-discontinued Google Picasa Photo Viewer.
Imagine is an Image & Animation Viewer for Windows with screen capture function.
South Korea
Eye of GNOME is the official image viewer for the GNOME Desktop environment. With it, you can view single image files, as well as large image collections. The Eye of GNOME supports a variety of image file formats.
United States
QuickViewer is a graphic image viewer for comfortable browsing of many images. This software performs reading of image data in advance. And drawing the imported image data on the screen with OpenGL. You can browse images with much smoother response than ever before.
Japan
Vipsdisp can display huge (many, many gigabyte) images quickly and without using much memory. As well as the usual PNG, JPG, TIF, PDF, SVG, WEBP, JP2, JXL and GIF, it supports many scientific and technical image formats, including SVS, MRXS, OpenEXR, FITS, Matlab, NIfTI...
United Kingdom
Geeqie is a free open software image viewer and organiser program for Linux, FreeBSD and other Unix-like operating systems.
Czechia
EU
Xviewer is a simple image viewer which uses the gdk-pixbuf library. It can deal with large images, and zoom and scroll with constant memory usage. Its goals are simplicity and standards compliance. Xviewer is installed by default in Linux Mint.
IrelandEU
Simplistic Image Viewer with focus on speed of rendering and switching between images. A good complement when no editing capabilities are nessesary.
SwedenEU
Imagot is an image viewer which aims to provide an open source alternative to Microsoft Photos or similar apps (and be multiplatform). It supports common image file types such as PNG, JPEG, SVG, etc.
Its minimalistic interface provides more screenspace for your images. Among its features are:
BulgariaEU
