gThumb Alternatives for macOS

A versatile and powerful photo viewer, image management, image resize developed by XnSoft. The XnView MP image viewer is a free software for macOS, Linux and Windows. The software consist of a photo viewer and a photo editor. With the photo viewer you can view browse photos in thumbnail, fullscreen and filmstrip view and compare images and manage EXIF, IPTC, XMP meta data. The photo editor can be used to resize, rotate and crop photos or adjust brightness, contrast and color while applying filters and effects to images. 

Xee³ Image Viewer is an streamlined and convenient image browser that allow you to manage your photos and rediscover old memmories. Xee³ Image Viewer share many similarities with macOS very own Preview app, the simplicity of the application makes it easy to browse the entire contents of folders and archives, move and copy image files quickly. The application supports most of the image formats commonly used today.

iPhoto is an image library application built Apple, specifically for macOS and iOS. With it, you can keep your photos organized and accessible on your personal device or in the cloud, with iCloud. iPhoto allow you to rediscover favorite shots and old memories.

Apple Photos is an app native to the macOS and iOS eco system. The application comes pre-installed with all Macintosh computers, iPhones and iPads. With Apple Photos you can manage, store and browse all your photos in a neat application.

ACDSee Photo Studio is an image organizer, viewer, and photo editing application for iOS, macOS and Windows. ACDSee provides all necessary tools for professional photo editing and unrivalled file management capabilities for finding, sorting, moving, organizing, and sharing. Everything you need to master your photography workflow is provided by ACDSee Photo Studio, and available out-of-the-box.