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 2.3.5:

• On macOS Big Sur, when closing a window after reviewing changes, Kaleidoscope should now always offer to save changes, instead of the app becoming unresponsive.
• Clicking a screenshot in the Getting Started window once again opens a sample document. Also, the app no longer crashes every time.
• Drastically reduced memory consumption in many areas.
• View > Decrease Text Size now always works as expected.
• Improved readability of some content when running on macOS Big Sur.
• New Privacy Policy and updated License Agreement.
• Various smaller bug fixes and improvements.

Screenshots:

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