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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 3.4.0:
New Features
  • Replace matches with preset replacement definition (Find > Multiple Replace).
  • Add outline menu to side bar.
  • Select tabbed window with Cmd+number.
  • Parse regular expression pattern in find string field in regular expression mod me "Resinifictrix".
  • Give haptic feedback on pinch zoom when the


  • OS X 10.11 or later

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CotEditor User Discussion

4.5 21


Current Version (3.x)


Downloads 15,393
Version Downloads 57
License Free
Date 16 May 2018
Platform Intel 64 / OS X
Price Free
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