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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 3.1.8:
  • Add ".swift" extension to file types treaded as CotEditor script
  • Update cot command:
    • Fix an issue where files cannot be opened if the default Python on macOS is version 3.x
    • Fix a possible hang under specific environments


  • 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 13,436
Version Downloads 215
License Free
Date 15 Mar 2017
Platform Intel 64 / OS X
Price Free
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