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CotEditor is an open-sourced, Cocoa-based plain-text editor for OS X. It supports syntax highlighting, powerful find-and-replace with OniGmo (regular expression engine), and other small goodies for coding. It can handle also CJK languages well.

What's New

Version 2.5.7:
  • Fix German localization
  • Fix "Markdown" and "Verilog" syntax styles
  • Fix update range of syntax highlight while editing
  • Fix key binding setting error message
  • Fix an issue where syntax validation result view was editable
  • Address an issue where editor's drawing area could become wrong after scaling font size by vertical text


  • OS X 10.8 or later

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4.8 15


Current Version (2.x)


Downloads 12,539
Version Downloads 109
License Free
Date 22 Aug 2016
Platform Intel 64 / OS X
Price Free
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