FastRawViewer
FastRawViewer opens RAW files extremely quickly and renders them on-the-fly, instead of just displaying embedded JPEGs. It allows a photographer to see the RAW exactly as a converter will "see" it, without any delays or waiting time, guaranteeing the possibility to sort and cull RAW images lightning fast and based on the quality of the RAW itself, not JPEG previews. FastRawViewer's RAW-based tools (unique ones such as RAW histogram, RAW statistics, Shadow Boost, Highlight Inspection, Focus Peaking, per-channel view, as well as familiar ones like Exposure Compensation, White Balance, Contrast Curves) allow one to estimate what converter will be able to squeeze from the RAW image data and make preliminary adjustments to the RAW file, which will be read and applied by Adobe converters.
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ApolloOne
ApolloOne is a powerful image viewer and manager designed for seasoned amateurs and professional photographers. The design objectives are ease of use and speed and lots of it. Arguably the fastest image viewer ever created for the macOS, it works with your existing folder structure without ever needing to import files into a database. It offers a comprehensive set of tools for photographers, smart memory card imports, displaying camera AF points, rating and culling images, managing metadata, searching and filtering, batch renaming, and much more. Easy to use interface with unique HUD display, maximizes image display area, especially on a Macbook. Browsing history for quickly switching between multiple events or projects. Rotate, mirror, and flip photos and videos instantly. Correct orientation of JPEGs without altering image data. EXIF metadata inspector with search and edit features. Add tags to your favorite list for quick filtering.
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CoolCroco
CoolCroco is a free image viewer built for one job: getting through a shoot without waiting. It decodes a whole folder of RAW files on background workers and holds them in memory, so once the first pass is done you move through hundreds of frames instantly, forwards or backwards, with no re-decoding and no cache thrashing. Cull with one key. A files a photograph into an Approved folder, X into Rejected, and Ctrl+Z puts it back. Nothing is ever deleted - files are only moved beside the originals. Rate from 1 to 5, written as XMP where Lightroom, Bridge and Capture One read it. It reads RAW from Sony, Canon, Nikon, Fujifilm, Olympus, Panasonic, Pentax, Leica, Hasselblad and Phase One through LibRaw, plus HEIC, JPEG, PNG, TIFF and WebP, up to 100,000 photographs in one folder. It also finds duplicates and bursts, detects out-of-focus frames, and searches a shoot by what is in the pictures, entirely on your own computer. Windows, macOS and Linux.
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PhotoViewerPro
True full-screen viewer with photo zoom support. Customizable image magnifier. Powerful image editing tools. Resize/resample, rotate/flip, crop, sharpen/blur, adjust lighting/colors/curves/levels, etc. Eleven re-sampling algorithms to choose from when resizing images. Image color effects, grayscale, sepia, negative, red/green/blue adjustment Image special effects. Annotation, drop shadow, framing, bump map, sketch, oil painting, lens. Draw texts, lines, highlights, rectangles, ovals, and callout objects on images. Clone stamp and healing brush. Superior red-eye effect removal/reduction with a completely natural-looking end result. Multi-level undo/redo capability. One-touch best fit/actual size image display support. Image management, including tagging capability, with drag-and-drop and copy-to/move-to folder support. Histogram display with a color counter feature. Compare images side-by-side (up to 4 at a time) to easily cull those forgettable shots. Image EXIF metadata support.
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