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CotEditor is a 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 2.3.1:
New Features
  • Add "Duplicate Line" action to Text > Lines menu.
  • Update Python syntax style:
    • Add terms added in Python 3.5.
  • Update R syntax style:
    • Fix boolean values were not highlighted correctly.
  • Update Shell Script syntax style:
    • Add "command" to extension more...


  • OS X 10.8 or later

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5 11


Current Version (2.x)


Downloads 10,118
Version Downloads 203
License Free
Date 16 Nov 2015
Platform Intel 64 / OS X
Price Free
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