digiKam
digiKam is an advanced open-source digital photo management application that runs on Linux, Windows, and macOS. The application provides a comprehensive set of tools for importing, managing, editing, and sharing photos and raw files. You can use digiKamâs import capabilities to easily transfer photos, raw files, and videos directly from your camera and external storage devices (SD cards, USB disks, etc.). The application allows you to configure import settings and rules that process and organize imported items on-the-fly. digiKam organizes photos, raw files, and videos into albums. But the application also features powerful tagging tools that allow you to assign tags, ratings, and labels to photos and raw files. You can then use filtering functionality to quickly find items that match specific criteria. digiKam features powerful searching capabilities that let you search the photo library by a wide range of criteria.
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WidsMob Viewer
View single image, multiple images or folder-based images in incredible fast speed and simple operation with various viewing modes. You can browse all your photos in one window without extra clicking and operating. Offer stunning filters and effects, adjust photo parameters like exposure, contrast, saturation, temperature, Sharpness, etc. and crop photo to suitable size as your iPhone, Android phone or computer wallpaper. When you have hundreds of photos, you can only add one image or the whole folder to WidsMob Viewer to preview all images. Even if you need to view photos in different folders, you can use the library mode. It has an advanced algorithm to view photos at super fast speed. Besides the JPG, JPEG, TIFF, PNG, BMP and other photos format, WidsMob Viewer also supports most of the popular RAW formats. It is able to load RAW files from SD card or external drive. It also enables you to turn RAW files into JPG, PNG and other photo formats.
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Handy Viewer
Handy Viewer provides an all-in-one solution for photo viewing and editing.
Handy Viewer boasts a user-friendly interface that offers an effortless experience right from the start. All required plug-ins and codecs are included, eliminating the need for cumbersome downloads. Navigating through folders and finding specific images is a breeze thanks to hotkey support and three different viewing modes you can choose from.
One standout feature of Handy Viewer is its extensive format compatibility. Whether it's JPEG, TIFF, PNG, or even the latest HEIC image format, Handy Viewer will open and display nearly any image file format. Moreover, Handy Viewer shines when it comes to video playback as well. In total, more than 150 formats are supported.
Photo editing and ability to apply effects is another important feature of this program. Handy Viewer allows you to resize, crop and rotate your images. The brightness, contrast, saturation, gamma can be configured as well.
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GIMP
This is the official website of the GNU Image Manipulation Program (GIMP). GIMP is a cross-platform image editor available for GNU/Linux, OS X, Windows and more operating systems. It is free software, you can change its source code and distribute your changes. Whether you are a graphic designer, photographer, illustrator, or scientist, GIMP provides you with sophisticated tools to get your job done. You can further enhance your productivity with GIMP thanks to many customization options and 3rd party plugins. GIMP provides the tools needed for high quality image manipulation. From retouching to restoring to creative composites, the only limit is your imagination. GIMP is used for producing icons, graphical design elements, and art for user interface components and mockups. GIMP is a high quality framework for scripted image manipulation, with multi-language support such as C, C++, Perl, Python, Scheme, and more!
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