XnView MP is recommended for photographers, graphic designers, and anyone who needs to organize, view, and edit a large collection of images. It's also well-suited for users who require bulk processing and conversion of image files.
Paint.NET is recommended for beginner to intermediate users who need an easy-to-use but powerful image editing tool. It's particularly suitable for individuals looking for free software for tasks like photo editing, graphic design, and basic digital painting.
XnView MP stands for Multi Platform = it is available for Windows, Linux and MacOS. It is a continuation of the older XnView Classic. In my opinion it is a great alternative to Windows photos app or any Linux image viewer that comes preinstalled. I even think it is an alternative to IrfanView. It is really fast and simple to use, supports more than 500 image formats, has built in folder browser, image converter, editor... AND MORE!
IrfanView - IrfanView ... one of the most popular viewers worldwide.
GIMP - GIMP is a multiplatform photo manipulation tool.
FastStone Image Viewer - FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
JPEGView - JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.