The Plain-Text Editor for macOS
light-weight, neat, yet powerful
Why you should choose CotEditor?
Just for macOS
CotEditor is exactly made for macOS. It looks and behaves just as macOS applications should.
CotEditor launches so quick that you can write your text immediately when you want to.
CotEditor is developed as an open-source project that allows anyone to contribute.
Colorize more than 50 pre-installed major languages like HTML, PHP, Python, Ruby or Markdown. You can also create your own settings.
Powerful Find & Replace
Super powerful find and replace using the ICU regular expression engine.
Setting via Click
There are no complex configuration files that require geek knowledge. You can access all your settings including syntax definitions and themes from a standard preferences window.
You don't need to lose your unsaved data anymore. CotEditor backups your documents automatically while editing.
Extract specified lines with the predefined syntax, and you can jump to the corresponding line.
Split a window into multiple panes to see different parts of your document at the same time.
Inspect Unicode character data of each selected character in your document and display them in a popover.
Check and list-up the characters in your document that cannot convert into the desired encoding.
CJK Language Friendly
Estimate various file encodings accurately, toggle to vertical text mode and keep its line height correctly.
We welcome your feedback ♡
Please don't hesitate to report any bugs or feature requests to our issue tracker.