Get started with CotEditor
CotEditor is a Mac-only text editor designed for working with plain text—from programming to everyday scratch. It features a macOS-native interface and seamlessly integrates with system features such as Dark Mode, Versions, iCloud, and VoiceOver. It behaves in a subtle, yet intelligent way that feels right at home on macOS.
Work with diverse plain text
CotEditor accurately opens documents that typical text editors can’t handle. This includes files with nonstandard text encodings or mixed line-ending types. Moreover, it helps identify locations in the document that may need attention.
Capture document structure with syntax analysis
CotEditor highlights programming keywords, Markdown headings, HTML elements, and more, making your document’s structure easy to see at a glance. It also lists heading-level sections automatically so you can jump to the part you want.
Powerful find and replace
The find & replace feature in CotEditor not only supports regular expressions, but also shows a list of search results or highlights matched words in your document.
Automate text editing with scripting
The Script menu lets you run scripts to manipulate your document or launch external programs.
To explore the CotEditor User Guide, click Table of Contents at the top of the page, or enter a word or phrase in the search field.