Kaleidoscope for Mac spots differences in text and image files.   FeaturesGeneral 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