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Best Productivity ResourcesBy Shushant LakhyaniVerified creator

Desktop App

nomacs

A free, open-source image viewer that can sync and compare views.

Visit nomacs4.3

  • Rating

    4.3 / 5

  • Pricing

    Free

  • Difficulty

    Beginner

  • Works on

    Windows, macOS, Linux

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What is nomacs?

nomacs is a free and open-source (GPL v3) image viewer that opens common formats including RAW and PSD, with cropping, resizing, rotating and colour adjustments. It can synchronise several viewers so panning and zooming apply to all of them, which makes comparing images easy. It runs on Windows, macOS and Linux; the latest release is 3.22.4 (October 2026).

Pros: what nomacs does well

  • Free and open source (GPL v3)
  • Opens RAW and PSD files
  • Synchronised viewers for comparing images

Cons: where it falls short

  • No full catalogue or keywording
  • Basic editing only

Who nomacs is for

People who need a fast, free viewer for photos and design files.

Who can skip it

Anyone who needs to organise a large library.

nomacs alternatives

Not sold on nomacs? These do a similar job, and each card says what it has in common.

All File Management resources

XnView MP

Focus: photo organiser, batch convert and metadata. Shares image viewer and bridge alternative with nomacs. Freemium (nomacs: Free). Rated 4.6 (nomacs: 4.3).

Desktop AppFree planWindows, macOS
4.6Visit

TagSpaces

Focus: file tagging and file manager. Shares open source and bridge alternative with nomacs. Freemium (nomacs: Free). Adds Web, iOS and Android. Same 4.3 rating.

Desktop AppFree planWindows, macOS
4.3Visit

calibre

Focus: ebooks, ebook converter and library. Shares open source with nomacs. Adds Offline. Rated 4.7 (nomacs: 4.3).

Desktop AppFreeWindows, macOS
4.7Visit

fd

Focus: file search, command line and developer tool. Shares open source with nomacs. Adds Offline. Rated 4.7 (nomacs: 4.3).

Desktop AppFreemacOS, Windows
4.7Visit

restic

Focus: backup, encryption and snapshots. Shares open source with nomacs. Rated 4.7 (nomacs: 4.3).

Desktop AppFreemacOS, Windows
4.7Visit

Yazi

Focus: file manager, terminal ui and developer tool. Shares open source with nomacs. Adds Offline. Rated 4.7 (nomacs: 4.3).

Desktop AppFreemacOS, Windows
4.7Visit

Free alternatives to nomacs

Want to spend nothing? These free picks cover similar ground.

BorgBackup

Focus: backup, encryption and deduplication. Shares open source with nomacs. Rated 4.6 (nomacs: 4.3).

Desktop AppFreemacOS, Windows
4.6Visit

Czkawka

Focus: duplicate finder, disk cleanup and similar images. Shares open source with nomacs. Adds Offline. Rated 4.6 (nomacs: 4.3).

Desktop AppFreemacOS, Windows
4.6Visit

dua-cli

Focus: disk usage, storage cleanup and terminal. Shares open source with nomacs. Rated 4.6 (nomacs: 4.3).

Desktop AppFreemacOS, Windows
4.6Visit

Etcher

Focus: usb, sd card and disk image. Shares open source with nomacs. Rated 4.6 (nomacs: 4.3).

Desktop AppFreemacOS, Windows
4.6Visit

eza

Focus: file listing, terminal and command line. Shares open source with nomacs. Rated 4.6 (nomacs: 4.3).

Desktop AppFreemacOS, Windows
4.6Visit

FreeFileSync

Focus: file sync, backup and folders. Shares open source with nomacs. Adds Offline. Rated 4.6 (nomacs: 4.3).

Desktop AppFreeWindows, macOS
4.6Visit
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