Xee
Xee is a streamlined and convenient image viewer and browser. It’s similar to macOS's preview app, but lets you easily browse the entire contents of folders and archives, move and copy image files quickly, and supports many more image formats. View contents in archives and folders, faster and easier, without extracting them. When your native preview refuses to display images because of an “unsupported file format”, use Xee for the job. You’re not only having a better view of all your files but better management also. Organize your image gallery in minutes. Xee is a Mac image viewer we always wanted and never had. It’s sleek, it’s fast, and it works with all types of images. Browse images in archives, view images of all formats and manage your galleries.
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Image Viewer Ultimate
Image Viewer Ultimate is a great application to view/run slideshows of your images/photos and it is also having batch resize and batch watermark features. Fit to actual size, zoom in, zoom out, full-screen mode, and play images as a slide show on Windows. Set slideshow time, setting available through application preferences. Supports retina display. Can export images as JPEG, PNG, TIFF, JIF, BMP. Batch conversion to the desired format as JPEG, PNG, TIFF, JIF, or BMP. Batch watermark to desired images. Save images in the desired size.
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Kiano
Kiano helps to look at your photos in a completely new way. With simple gestures it is possible to visually navigate through all your photos (from your System Photo Library), which are organized according to their similarity on a huge map. Kiano is the only app you need to view and find your photos. Besides image maps with a flat or perspective view, Kiano also offers list views, a professional photo viewer, and a visual similarity search. Kiano presents photos from Apple's System Photo Library. You can have multiple Photo Libraries and assign any of them to be the System Photo Library, but you cannot just open a folder containing all your images.
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Another Photo Viewer
This is a offline image gallery application. You can upload your images into the application, with your own sorting order (alphabetical order), and directories structure. You can transfer your photos via iTunes, or just import the photo from your device. There are some simple functions that help you to manage your photos in the app. On top of those, you can view the images in full-screen mode or slide-show mode.
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