Kaleidoscope spots differences in text and image files.Features
General

• Single window workflow: One tab per comparison
• Compare two+ files: Add any number of files per tab
• Always up to date: Auto-refreshes when files change
• File Shelf: Quickly go from file to file
• Path Bar: See where your files are
• Keyboard shortcuts: Every action has a shortcut

Text Scope

• Supports any text file: Plain text, source code, HTML, etc.
• Clear comparisons
• Three layouts: Blocks, Fluid, and Unified
• Compare documents: Imports text from .doc and .rtf files
• Instant search
• Change Stepper: Quickly jump from change to change
• Highlights: Added, deleted and changed text

Image Scope

• All popular image file formats: JPEG, TIFF, PNG, PSD and more.
• Four connected layouts: Two-Up, One-Up, Split, and Difference
• Comprehensive image support: RGB/CMYK/LAB, alpha, any size.
• Multi-touch support: Smooth scrolling and pinch to zoom
• Customizable environment: Change background color, difference mask and checkerboard settings
• Two difference mask modes: Spot absolute or relative changes

Integration

• Git, Mercurial, SVN, and Bazaar: Integrate with a couple of clicks
• Versions
• TextMate SVN
• Cornerstone
• ksdiff Command-line tool: Integrate with practically anything

What's New:

Version 2.4:

• New Xcode debugger integration (see Kaleidoscope > Integration…), providing ksp and kspo commands in lldb. Check out the examples to get an idea how much superpower this can add to your debugging abilities.
• The ksdiff tool now always accepts the --label (-l) option to send the command to a specific Kaleidoscope window.
• The ksdiff tool now accepts input via pipe. Use - in the file list where the piped input should be, or just use it in combination with the --label option to send multiple runs of a command into one window.
• Enjoy improved window titles. Also, the tab bar is only visible if there is more than one document in a window.
• Various small visual improvements, particularly on macOS Big Sur. We also fixed some drawing glitches here and there.
• Fix an issue where ksdiff would not work on macOS High Sierra unless Kaleidoscope was already running.
• Kaleidoscope no longer gets stuck when being launched with VoiceOver turned on.

Screenshots:

• 
• 
•