CotEditor is a lightweight plain-text editor for macOS. The project aims to provide a general plain-text editor for everyone with an intuitive macOS-native user interface.

• Requirement: macOS 13 Ventura or later
• Web Site: https://coteditor.com
• Mac App Store: https://itunes.apple.com/app/coteditor/id1024640650?ls=1
• Languages: English, Czech, Dutch, French, German, Italian, Japanese, Portuguese, Spanish, Simplified Chinese, Traditional Chinese, Turkish

CotEditor is a purely macOS native application written in Swift. It adopts Cocoa's document-based application architecture and respects the power of NSTextView.

• macOS 14 Sonoma
• Xcode 15.3
• Swift 5.10
• Sandbox enabled

CotEditor has its own contributing guidelines. Read CONTRIBUTING.md through before you create an issue or make a pull-request.

For those people who just want to build and play with CotEditor locally.

1. Run the following commands to resolve dependencies.
   • git submodule update --init --recursive
2. Open CotEditor.xcodeproj in Xcode.
3. Change to ad-hoc build mode:
   1. Open Configurations/CodeSigning.xcconfig.
   2. Comment out #include "CodeSigning-Default.xcconfig".
   3. Uncomment #include "CodeSigning-AdHoc.xcconfig".
4. Build "CotEditor" scheme in the workspace.

1. Run the following commands to resolve dependencies.
   • git submodule update --init --recursive
2. Open CotEditor.xcodeproj in Xcode.
3. Build "CotEditor" scheme in the workspace.

© 2005-2009 nakamuxu, © 2011, 2014 usami-k, © 2013-2024 1024jp.

The source code is licensed under the terms of the Apache License, Version 2.0. The image resources are licensed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. See LICENSE for details.