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CotEditor is an open-sourced, Cocoa-based plain-text editor for macOS. It supports syntax highlighting, has a powerful find-and-replace with the regular expression, and other small goodies for coding. It can handle also CJK languages well.

What's New

Version 3.2.6:
  • Fix an issue where backslashes in replacement strings were not unescaped correctly
  • Fix an issue where items in the Script menu were not sorted by prefix numbers
  • Fix a possible crash on handling documents with an invalid shebang
  • Fix Japanese localization


  • OS X 10.10 or later

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CotEditor User Discussion

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4.8 17


Current Version (3.x)


Downloads 14,160
Version Downloads 33
License Free
Date 12 Dec 2017
Platform Intel 64 / OS X
Price Free