qimgv is described as 'Qt5 image viewer with optional video support. Ability to quickly copy / move images to different folders. Can open some extra formats (JPEG-XL, AVIF, APNG, HEIF/HEIC, RAW) via third-party image plugins' and is a Image Viewer in the file management category. There are more than 100 alternatives to qimgv for a variety of platforms, including Windows, Mac, Linux, Flathub and iPad apps. The best qimgv 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 qimgv are nomacs, FastStone Image Viewer, qView and XnView Classic.
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
Diffractor unifies managing photo, video and audio files. If you centralize media on that trusty old PC; let Diffractor do the heavy lifting.
Australia
Waterfall-style image viewer for macOS, offering a smooth and immersive browsing experience.
Pixyway is a fresh new picture viewer for Windows. It has been designed to be an 'everyday' picture viewer tool like Google Picasa viewer used to be! By the way, if you liked Picasa viewer, you will notice some references to it.
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
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.
Geeqie is a free open software image viewer and organiser program for Linux, FreeBSD and other Unix-like operating systems.
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Universal Viewer is an advanced file viewer for wide range of formats. Supported file formats are:
Russia
Neo Simple X Image Viewer (nsxiv) is a fork of the now-unmaintained sxiv with the purpose of being a (mostly) drop-in replacement for sxiv.
All-in-one photo editor offering organized asset management, advanced RAW processing, detailed layers and masks, HDR monitor compatibility, AI-powered tools for editing, integrated video editor for trimming, flexible culling options, and print creation features.
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Fragment is an image viewer with cool features like: Upload and Share, HUD User Interface, Peeking and Skimming, Animated GIFs, History, Thumbnails, Fill View and it is fast!
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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.
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