Browse free open source Image Viewers and projects for Windows and Mac below. Use the toggles on the left to filter open source Image Viewers by OS, license, language, programming language, and project status.

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  • 1
    FreeImage is a library project for developers who would like to support popular graphics image formats (PNG, JPEG, TIFF, BMP and others). Some highlights are: extremely simple in use, not limited to the local PC (unique FreeImageIO) and Plugin driven!
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    Downloads: 2,357 This Week
    Last Update:
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  • 2
    GPXSee

    GPXSee

    GPS log file viewer and analyzer

    GPS log file viewer and analyzer with support for GPX, TCX, KML, FIT, IGC, NMEA, SLF, SML, LOC, GPI, GeoJSON and OziExplorer files.
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    Downloads: 1,993 This Week
    Last Update:
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  • 3
    OffRoad

    OffRoad

    Offline vector map display ported from OsmAnd

    An offline map viewer for the Desktop based on OsmAnd.
    Downloads: 29 This Week
    Last Update:
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  • 4
    PicView

    PicView

    Fast, free and customizable picture viewer

    PicView is a fast, free and fully customizable picture viewer for macOS and Windows 10/11. It supports virtually all image file types, including (animated) WEBP, (animated) GIF, SVG, AVIF, HEIC, PSD and many others. Additional features includes viewing EXIF metadata, image compression, batch resizing, viewing images within archives and comic books, image effects, image galleries, and more. Enjoy a clean, free, and fast experience with no annoying pop-ups, and zero tracking. It works out of the box — or you can customize it to your needs. Available in portable and installable versions.
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    Downloads: 101 This Week
    Last Update:
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  • 5
    nomacs Image Lounge

    nomacs Image Lounge

    nomacs is a fast and small image viewer

    nomacs is a free image viewer for windows, linux, and mac systems, which is licensed under the GNU Public License v3. nomacs is small, fast and able to handle the most common image formats including RAW images. NOTE: nomacs has moved: http://download.nomacs.org
    Downloads: 9 This Week
    Last Update:
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  • 6
    Fox Photo Viewer

    Fox Photo Viewer

    Web-based HTML5 Photo Viewer

    • Description Web-based HTML5 Photo Viewer • Credits Bootstrap - Copyright © 2021 The Bootstrap Authors - https://getbootstrap.com/ Font Awesome - Copyright © 2021 Fonticons, Inc. - https://fontawesome.com/ jQuery - Copyright © 2021 The jQuery Foundation. - https://jquery.com/ • Minimum Requirements 64 MB of RAM 10 MB storage drive • Supported Web Browsers Google Chrome 49.0.2623 or later Mozilla Firefox 38.0.1 or later Microsoft Edge 34.14295 or later Opera 36.0.2130.65 or later Internet Explorer 11 • ReadMe Excluding the "English" language, all languages are maintained by Google Translate. As sush, translations may be incorrect and/or incomplete.
    Downloads: 1 This Week
    Last Update:
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  • 7

    libqemf

    Enables Qt based applications to draw the contents of EMF files.

    The Enhanced MetaFile format (EMF) is the native vector graphics file format on Windows. Qt is a cross-platform application development framework, widely used for the development of GUI programs. Although it provides tools for almost every aspect of software development, Qt doesn't include a solution for the rendering of the EMF image format. libqemf covers this lack and provides the QEmfRenderer class that enables Qt based applications to easily draw the contents of EMF files onto paint devices.
    Downloads: 1 This Week
    Last Update:
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  • 8
    Apple ][ Graphic

    Apple ][ Graphic

    Programs and library to draw Apple ][ graphics formats

    Programs and library to draw Apple ][ graphics formats. Support for HGR, DHGR and Apple IIgs SHR ($C1, PIC) format with export to BMP and PNG. Support also for apple shapes.
    Downloads: 0 This Week
    Last Update:
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  • 9
    CatBlock

    CatBlock

    The continued maintenance of Michael Gundlach's CatBlock

    After the creator of AdBlock, Michael Gundlach, retired official support of the CatBlock project, and made it Open-Source under the GNU GPLv3, two people decided to continue maintenance, albeit unofficially. This is that project.
    Downloads: 0 This Week
    Last Update:
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  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
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  • 10

    Exif UserComment Editor

    Dialog box to edit Exif comment into images

    Display a simple graphical dialog box to add or edit Exif UserComment contained into images. Supports Unicode UTF-8 characters. Originally developed as a plugin for Geeqie image viwer. It requires Python GTK+ and exiv2 tool.
    Downloads: 0 This Week
    Last Update:
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  • 11
    A PHP implementation of the Gallery2 Remote Protocol Supports the following commands No-op, Login, Create new item, Create new album, Find album, Fetch album images, Find duplicates by caption and includes a simple multilevel log functionality
    Downloads: 0 This Week
    Last Update:
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  • 12
    Homogram

    Homogram

    Every person its pictures, instagram like on premise solution

    Hello and welcome to Homogram! Homogram is a light and simple software on premise to share your images. And it can be used as a private repository (screenshots, private shots, etc). Homogram is released under GPLv3 license, it is supplied AS-IS and we do not take any responsibility for its misusage. The name Homogram comes from a prank on the name 'instagram', in fact differently from the latter Homogram gives priorities to homines. However Homogram doesn't birth as its replacement but just like its alter ego. Please refer to the README.md for a correct setup. Homogram gets released on http://github.com/par7133/Homogram ;-)
    Downloads: 0 This Week
    Last Update:
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  • 13
    photodisplay project a web app to display photos (PhotoAlbum.war) a helper script http://photodisplay.sourceforge.net/webnail.html
    Downloads: 0 This Week
    Last Update:
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  • 14
    PicsONmydesk

    PicsONmydesk

    Simple Image Frame

    Image frame for desktop with automatic image change. Useful for keep things in mind . Release Version 1.0.0 - Add remove item - Some improved code Release Version 1.1.0 - Bug fixes - Some improved code - Added deb package for Ubuntu/Debian based distros (Requires Java)
    Downloads: 0 This Week
    Last Update:
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  • 15
    Touhou Doujin Reader

    Touhou Doujin Reader

    A fanmade app that can download and read touhou fanworks.

    For you all touhou fans, I designed a C# application to download and read conveniently english-translated doujins from Gensokyo.org. Hope you’ll like it ! I would like to really thank Gensokyo.org for their wonderful work with these scans ! Also, I used the DotNetZip library in order to unzip packages, and this great image-viewing control from here. Thanks to all of them !
    Downloads: 0 This Week
    Last Update:
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  • 16
    Pure Java client for fetching images from an url. As default the client shows the webcam of Tübingen.
    Downloads: 0 This Week
    Last Update:
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