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Open Source nomacs Alternatives

The best open source alternative to nomacs is ImageGlass. If that doesn't suit you, our users have ranked more than 50 alternatives to nomacs and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to nomacs are qView, JPEGView, qimgv and Gwenview.

nomacs alternatives are mainly Image Viewers but may also be Image Editors or Photo Managers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of nomacs.
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  • Mac
  • Windows
  • Linux
  • FreeBSD

nomacs is a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image...

Learn more about nomacs
  1. ImageGlass icon

    ImageGlass

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    • Windows
    61 alternatives to ImageGlass 

    ImageGlass is a simple picture viewer with which you will be able to display your image collection in a very similar way to the one that Windows provides by default, but with some additional functions. This application will allow you to better manage your pictures thanks to the...

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    Features
    1.  Support for ThemesYou can use themes and templates to change the look and feel of ImageGlass.
    2.  PortableImageGlass can be used from a USB stick or similar with no prior installation.
    Bundleware

    The first installer available on the website, presented by the author, "ImageGlass Spider", is bundleware. From the privacy policy: "Also, the software shares available resources with the Spider's customers, to pass traffic through your device."The author is aware of the problem and indecisive on what action to take. Since less experienced users would fall for the "Spider" edition, be careful when downloading this software.

    Screenshot
    Screenshot
  2. qView icon

    qView

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    • Mac
    • Windows
    • Linux
    80 alternatives to qView 

    qView is a Qt-based image viewer designed to be practical and minimal, available for Windows, macOS, and Linux

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    Features
    1.  LightweightqView consumes less device resources compared to similar apps.
    2.  PortableqView can be used from a USB stick or similar with no prior installation.
    3.  Ad-freeqView doesn't contain any form of external advertising.
    Screenshot
    Screenshot
  4. JPEGView icon

    JPEGView

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    • Windows
    • PortableApps.com
    116 alternatives to JPEGView 

    JPEGView is a lean, fast and highly configurable viewer/editor for JPEG, BMP, PNG, WEBP, TGA, GIF and TIFF images with a minimal GUI. Basic on-the-fly image processing is provided - allowing adjusting typical parameters as sharpness, color balance, rotation, perspective...

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    Features
    1.  LightweightJPEGView consumes less device resources compared to similar apps.
    2.  PortableJPEGView can be used from a USB stick or similar with no prior installation.
    3.  Ad-freeJPEGView doesn't contain any form of external advertising.
    Discontinued

    This project hasn't been updated since 2018 and has since been forked with numerous updates at https://github.com/sylikc/jpegview

    Very simple. Only a title bar other than the picture.
    Screenshot
  5. qimgv icon

    qimgv

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    • Windows
    • Linux
    92 alternatives to qimgv 

    Qt5 image viewer with optional video support. Contribute to easymodo/qimgv development by creating an account on GitHub.

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    Features
    Discontinued

    "DEVELOPMENT IS ON HOLD INDEFINITELY (russian invasion of my country)" - Developer

    Screenshot
    qimgv vs nomacs opinions
    pros, cons and recent comments
    Nightcall

    Video playback, better UI and grid layout and can move, cut, copy & paste files.

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  6. Gwenview icon

    Gwenview

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    • Linux
    • KDE
    72 alternatives to Gwenview 

    Gwenview is an image viewer for KDE. It can load and save all image formats supported by KDE, but Gwenview can also browse GIMP files (*.xcf). Gwenview does not try to replace your favorite image editor, so it only features the most simple image manipulations: rotation and...

     Suggest and vote on features
    Features
    1.  LightweightGwenview consumes less device resources compared to similar apps.
    2.  Ad-freeGwenview doesn't contain any form of external advertising.
    3.  PortableGwenview can be used from a USB stick or similar with no prior installation.
    Screenshot
    Screenshot
  8. gThumb icon

    gThumb

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    • Linux
    • GNOME
    107 alternatives to gThumb 

    gThumb is an image viewer and browser for the GNOME Desktop. It also includes an importer tool for transferring photos from cameras.

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    Features
    Adjust Colors
  9. PhotoQt icon

    PhotoQt

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    • Windows
    • Linux
    40 alternatives to PhotoQt 

    PhotoQt is a simple, yet powerful and good looking image viewer, written in Qt, published as open-source, and completely free.

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    Features
    Screenshot
  10. Eye of GNOME icon

    Eye of GNOME

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    • Linux
    73 alternatives to Eye of GNOME 

    Eye of GNOME is the official image viewer for the GNOME Desktop environment. With it, you can view single image files, as well as large image collections. The Eye of GNOME supports a variety of image file formats.

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    Features
    1.  PortableEye of GNOME can be used from a USB stick or similar with no prior installation.
    2.  Dark ModeEye of GNOME supports dark mode for comfortable usage in low light conditions.
    3.  LightweightEye of GNOME consumes less device resources compared to similar apps.
      Screenshot
    • PicView icon

      PicView

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      • Windows
      41 alternatives to PicView 

      Fast Picture Viewer with compact UI that can be hidden. Features image effects, galleries, EXIF, Image compression and more. The application can automatically adjusts itself to your screen. Clean, free, fast. No bloated UI. No annoying pop-ups.

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      Features
      1.  Color PickerPicView allows you to select and copy a color property from an image, object, or shape.
      2.  PortablePicView can be used from a USB stick or similar with no prior installation.
      3.  Privacy focusedPicView is considered a privacy friendly alternative.
      Choose light or dark theme
      The interface can be hidden, to only view the image. The buttons fades out when not needed
    • QuickViewer icon

      QuickViewer

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      • Windows
      • Linux
      91 alternatives to QuickViewer 

      QuickViewer is a graphic image viewer for comfortable browsing of many images.

      This software performs reading of image data in advance. And drawing the imported image data on the screen with OpenGL. You can browse images with much smoother response than ever before.

      Portabl.

       Suggest and vote on features
      Features
      Discontinued

      The latest version (1.1.8) was released in December 2019.

      Screenshot
    Showing 10 of 37 alternatives
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