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Kaleidoscope

Mac app for comparing and merging text, images and folders, with deep Git integration.

PaidDiff and merge tools
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About Kaleidoscope

Kaleidoscope is a long-running Mac app for seeing differences between files and resolving them. It compares text down to the character, images pixel by pixel with split, blink and overlay views, and entire folder trees, and it offers three-way merging for conflicts. Recent versions lean into Git: you can open a repository, browse a file's full history, review all changes between two commits as one changeset that updates live as you edit, and step through merge conflicts with commit messages alongside. A command-line helper, ksdiff, connects it to git difftool, git mergetool and many Git clients. It is aimed at developers, designers and writers on macOS who want a polished visual diff tool. Kaleidoscope is now sold only as a monthly or yearly subscription, with a seven-day trial, and the app stops working when the subscription ends; owners of versions 2 and 3 can keep using those. It runs only on macOS.

Best for: Mac developers and designers who want polished diffs for code, images and Git history.

Pros and cons

What works

  • Text, image and folder comparison in one app
  • Three-way merge and Git history browsing
  • ksdiff integrates with git and most Mac Git clients

Why people leave

  • Subscription only; the app stops working when it lapses
  • macOS only
  • Costs more than one-time-purchase rivals over a few years

Top Kaleidoscope alternatives

See all 2
  1. 1Be
    Beyond Compare

    One-time licence instead of a subscription, and it also runs on Windows and Linux.

    66.5
  2. 2VisualDiffer logo
    VisualDiffer

    Free open-source Mac app for folder and file comparison when you don't need image diffs or merging.

    62.6

Why people left Kaleidoscope

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Reviews

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Kaleidoscope: common questions

Is Kaleidoscope free?

No, Kaleidoscope is a paid product. Starting price: $8 a month (checked on Kaleidoscope's own site).

Is Kaleidoscope open source?

No, Kaleidoscope is not open source. Open-source alternatives include VisualDiffer.

What platforms does Kaleidoscope run on?

Kaleidoscope is available for macOS.

What are the best alternatives to Kaleidoscope?

The highest-ranked Kaleidoscope alternatives right now are Beyond Compare and VisualDiffer. See the full ranked list for pricing, platforms and verified facts.

See all 2 Kaleidoscope alternatives