GIMP is a free program for such photo retouching, image composition and image authoring. Essentially it's the closest thing to Photoshop you can get for free.
- - GIMP is the most popular Windows, Mac & Linux alternative to PhotoViewerPro.
- - GIMP is the most popular Open Source & free alternative to PhotoViewerPro.
Adobe Photoshop is a raster graphics editor developed and published by Adobe Inc. for Windows and macOS. It was originally created in 1988 by Thomas and John Knoll.
- - Adobe Photoshop is the most popular Web-based & iPad alternative to PhotoViewerPro.
- - Adobe Photoshop is the most popular commercial alternative to PhotoViewerPro.
Adobe Photoshop Features
Paint.net is a free and very capable image editing software for Windows. Great alternative to Photoshop for people that do not need all the stuff PS offers.
Affinity Photo is a professional, full-featured raster graphics editor. Working in Affinity Photo is always live and you can pan and zoom at 60fps, with live previews and non destructive application. It supports unlimited layers and a dedicated RAW editing workspace, as well as...
Affinity Photo Features
Pixlr® makes it easy to transform everyday images into stunning works of art. Whether you’re applying a quick fix to your photos or adding your personal touch with effects, overlays, or borders, Pixlr has everything you need to make your moments beautiful.
- - Pixlr is the most popular Android, iPhone & Android Tablet alternative to PhotoViewerPro.
Pixelmator is a powerful, beautiful, and easy to use image editor. Featuring an elegant and streamlined single-window interface, it puts all the focus on the images you edit, rather than what's around them.
PhotoScape is a fun and easy photo editing software that enables you to fix and enhance photos.
From high-precision light and color tools, to advanced clarity and dehaze settings, to the ability to create and save your own filters. Polarr is the ideal photo editor for bloggers, students, and photo professionals alike.
Glimpse is an open source image editor based on the GNU Image Manipulation Program. The goal is to experiment with new ideas and expand the use of free software.Discontinued
The Glimpse editor has been discontinuedSource: https://glimpse-editor.org/posts/a-project-on-hiatus/
Edit, share, and upload photos on-the-go, or access your entire online photo library with a finger-flick using Adobe Photoshop Express for iPhone, iPad and Android.
Adobe Photoshop Express Features
Draw, part of the Apache OpenOffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams. With a maximum page size of 300cm by 300cm, Draw is powerful tool for posters, graphs, charts, and more.
Apache OpenOffice Draw Features
Acorn is a photo editor built for the rest of us. With a simple interface and tools for adding everything from text, shapes, and effects, you can make the perfect picture in seconds and minutes, not hours and days.