CotEditor
CotEditor gives you a lightweight Mac editor for plain-text notes, Markdown, and source code, with tools for everyday writing and precise text cleanup.
by Mineko IMANISHI
What you get
You can edit text quickly and catch hidden formatting problems.
With CotEditor, you can open a plain-text file quickly and get straight to writing notes, editing Markdown, or changing source code. You can spot code structure through syntax coloring, jump between sections with an outline menu, and browse nearby files in a folder sidebar.
When you need to make repeated changes, you can edit several places at once with multiple cursors or find and replace patterns using regular expressions. Live word, character, and line counts help you check your text as you work. You can also automate editing tasks with scripts.
You get a clearer view of text problems that are easy to miss. Reveal invisible characters, inspect Unicode details, and receive warnings about mixed line endings or characters your chosen encoding cannot save. All editing features are free; optional purchases support the project.
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Make repeated edits faster
You can change multiple locations at once or replace matching text patterns with regular expressions.
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Navigate longer files
You can jump between document sections using a syntax-based outline and browse files in the folder sidebar.
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Catch hidden text issues
You can reveal invisible characters and identify mixed line endings or characters incompatible with your chosen encoding.
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Check your writing length
You can see character, word, and line counts update while you edit.
Best for
- You regularly edit plain-text notes or Markdown files
- You make quick source-code changes on your Mac
- You need to inspect encoding, Unicode, or line-ending problems
Skip it if
You do not need it if you only work in formatted documents rather than plain-text files.
Screenshots
From the developer
CotEditor is a lightweight plain-text editor for source code, notes, Markdown, web content, and more. Its clean, neat interface makes everyday editing simple and comfortable, while powerful tools support more advanced work when you need them.Read the full description
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