A free and open source plain-text editor for your Mac

CotEditor for Mac

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CotEditor 3.4.3

  -  25.1 MB  -  Open Source
Free Download

Security Status

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of CotEditor 3.4.3.


For those interested in downloading the most recent release of CotEditor for Mac or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


We would love to hear from you

If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!

Download CotEditor 3.4.3

  • CotEditor 3.4.3 Screenshots

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    CotEditor 3.4.3 Screenshot 1
  • CotEditor 3.4.3 Screenshot 2
  • CotEditor 3.4.3 Screenshot 3
  • CotEditor 3.4.3 Screenshot 4
  • CotEditor 3.4.3 Screenshot 5

What's new in this version:

- Fix an issue where the help button in the multiple replace window did not link to the suitable help page
- Fix an issue where the current line highlight was opaque in split editors although the editor background is non-opaque
- Fix an issue where unwanted debug log was printed in the Console
- Fix an issue where “Show File Mapping Conflicts” menu item was always available even no conflict exists
- Improve general stability
- Fix an unlocalized label

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