The updater's “Install” button works only on CotEditor 3.3.0 and later.
To update from an earlier version, download archive from and install it manually.

What's New on CotEditor 3.4.3



  • 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.

previous release notes