Alternatives to nomacs

A fast image viewer that opens RAW and PSD files and can show the same picture in two synchronised windows. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as nomacs.

  • ImageGlass

    A fast image viewer that opens the formats Windows still argues about: WebP, JXL, HEIC, AVIF, SVG, HDR and raw.

    FreemiumOpen sourceWindowsmacOSLinux

    ImageGlass is a GPL-3.0 viewer with over ninety formats including JPEG XL and AVIF, though its macOS and Linux builds are newer and some features need Pro.

  • XnView MP

    Views, converts and organises images in more than five hundred formats, free for personal use.

    FreemiumProprietaryWindowsmacOSLinux

    XnView MP reads more than five hundred formats with batch conversion and tagging, but it is closed source and commercial use requires a paid licence.

  • IrfanView

    A tiny Windows image viewer that has opened everything since 1996 and still starts instantly.

    FreemiumProprietaryWindows

    IrfanView is a fast viewer with batch conversion and plugins, but it is Windows only, closed source and paid for commercial use.

  • Geeqie

    Browse and organize images with a Unix desktop viewer.

    FreeOpen sourceLinux

    Geeqie is a free GPL-2.0 viewer for browsing and organising collections, but it targets Linux and Unix-like systems only.

  • JPEGView

    Browse images and make quick edits with a compact viewer.

    FreeOpen sourceWindows

    JPEGView is a free GPL-2.0 compact viewer with quick edits and camera RAW support, available on Windows only.

  • Gwenview

    KDE's image viewer for browsing collections of images, with simple editing and annotation tools.

    FreeOpen sourceLinux

    Gwenview is KDE's open-source Linux viewer with basic edits and annotation tools, but it lacks Windows and macOS builds and synchronised windows.

  • Oculante

    A fast, simple cross-platform image viewer with basic editing tools and wide format support.

    FreeOpen sourceWindowsmacOSLinux

    Oculante is a lightweight open-source Rust viewer for Windows, macOS and Linux with basic editing, though the project is in maintenance mode.

  • gThumb

    An open-source image viewer and browser for the GNOME desktop on Linux.

    FreeOpen sourceLinux

    gThumb is an open-source GNOME image viewer and browser for Linux that works on local folders, without PSD support or multi-window synchronisation.

Also worth comparing

These listings name nomacs as their own alternative, so the relationship runs both ways.

  • BandiView

    A Windows image viewer with HDR output, RAW support and a vertical webtoon viewing mode.

    FreemiumProprietaryWindows

    nomacs is free and open source, runs on Windows, macOS and Linux, opens RAW and PSD files and can sync pan and zoom between two windows.

  • Eye of GNOME

    The classic GNOME image viewer, with a straightforward interface and support for plugins.

    FreeOpen sourceLinux

    nomacs is open source and cross-platform, running on Windows, macOS and Linux, and opens RAW and PSD files with a metadata panel and basic batch processing.

  • FastRawViewer

    A desktop RAW viewer that renders the RAW data itself, for culling and rating photo shoots quickly.

    PaidProprietaryWindowsmacOS

    nomacs is a free, open-source viewer for Windows, macOS and Linux that opens RAW files, though RAW support depends on build libraries and it lacks RAW histograms and focus peaking.

  • feh

    Lightweight, keyboard-driven image viewer for X11 that also sets wallpapers and lists image files.

    FreeOpen sourceLinuxCommand line

    nomacs opens RAW and PSD files, synchronises zoom across windows and runs on Windows, macOS and Linux, but exposes many panels at once.

  • Loupe

    GNOME's default image viewer, with metadata display and quick crop, rotate and flip edits.

    FreeOpen sourceLinux

    nomacs adds Windows and macOS builds, RAW and PSD support, batch processing and synchronised windows, though its interface exposes many panels at once.

  • LXImage-Qt

    A lightweight image viewer and screenshot tool from the LXQt desktop project.

    FreeOpen sourceLinux

    nomacs is an open-source viewer running on Windows, macOS and Linux that opens RAW and PSD files, with a metadata panel and basic batch processing.

  • Lyn

    A lightweight macOS image browser and viewer with non-destructive editing, geotagging and sharing.

    PaidProprietarymacOS

    nomacs is free and open source across Windows, macOS and Linux, opening RAW and PSD files with a metadata panel, though its adjustments are minimal.

  • qimgv

    A fast, configurable image viewer with basic cropping and resizing and optional video playback.

    FreeOpen sourceWindowsLinux

    nomacs is a free, open-source viewer for Windows, macOS and Linux that opens RAW and PSD files and can sync pan and zoom between two windows.

  • Ristretto

    A simple, fast image viewer developed as part of the Xfce desktop environment for Linux.

    FreeOpen sourceLinux

    nomacs is an open-source viewer for Windows, macOS and Linux that opens RAW and PSD files and adds a metadata panel and batch processing.

  • vimiv

    An image viewer controlled with vim-like keybindings, with a thumbnail mode and basic editing.

    FreeOpen sourceLinux

    nomacs runs on Windows, macOS and Linux, opens RAW and PSD files and syncs two windows, but uses a panel-heavy graphical interface rather than vim-style keybindings.

  • Xviewer

    Linux Mint's simple image viewer, built on gdk-pixbuf and designed to work across desktops.

    FreeOpen sourceLinux

    nomacs runs on Windows, macOS and Linux, opens RAW and PSD files and adds synchronised windows and batch processing, but exposes many panels at once.

Similar software

Related functionality, not a direct replacement.