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iChm is a chm file reader for Mac OS X


  • Fully built with Cocoa. No ugly window and slow rendering.
  • Tab browsing
  • Search through the chm file. Automatically sorted by relevance.
  • Find in the page
  • Index
  • Find by Index
  • Text encoding switching
  • Tag powered bookmark
  • Export whole file to PDF
  • Back/Forward/Home
  • Text zoom
  • Automatically locate current document in table of content
  • Localized in Chinese, German, Spanish and Dutch.


Mac OS X 10.6 or above

For Mac OS X 10.5, please use iChm 1.4.3

iChm for iPhone/iPod Touch

An iPhone/iPod Touch version of iChm is available at Apple's App Store



This project is open sourced under BSD License AND following conditions should also met before any redistribution and use in source and binary forms, with or without modification, is permitted:

  • Redistributions must include the name and link to this project.
  • Redistributions must include the names of the contributors of this project.
  • Commercial redistribution must notify users the name and link to this project before users will buy the redistributions.
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