CotEditor

system requirements: macOS 15 and later

New Features

• Introduce the filter feature in the file browser.
• Introduce the “Insert comment delimiters after indent” option to the Edit settings pane.
• Revert the “Append a space to comment delimiter” option to the Edit settings pane.

Improvements

• Improve the algorithm to comment out block comments.
• Ignore .git folders in the file browser.
• Prevent moving focus to the editor when selecting a document in the file browser.
• [dev] Update the build environment to Xcode 26.1 beta 3.

Full Changelog: 6.0.4...6.1.0-beta

system requirements: macOS 15 and later

Improvements

• Improve the user interface details on macOS 26.
• Enable the enhanced runtime security protections.
• Ensure that the sidebar is always displayed when opening a folder document.
• Improve the “Open with External Editor” button in file preview views to allow specifying the application to open.
• [trivial] Display a confirmation dialog after changing the “Reopen windows from last session” option in the General settings pane.
• [trivial] Make text in the information part of the About window selectable.
• [dev] Update Yams from 6.1.0 to 6.2.0.
• [dev] Update the build environment to Xcode 26.0.1.

Fixes

• Workaround an issue on macOS 26 where the editor’s scroller tracks have a d

system requirements: macOS 15 and later

Improvements

• Change the default editor font size to 13 pt.

Fixes

• Fix an issue on macOS 15 where the horizontal scroller appears in editors even when setting lines to wrap.
• Address a potential crash on macOS 26 that can occur when opening a document.

system requirements: macOS 15 and later

Fixes

• Fix an issue on macOS 26 where the application crashes by opening the Donation settings pane while a system theme color other than Multicolor is selected in the System Settings > Appearance.
• Fix an issue where the theme setting changes unexpectedly when opening the Appearance settings pane after switching the system appearance mode.
• Fix an issue where the indentation style detection doesn’t work.

Full Changelog: 6.0.1...6.0.2

Improvements

• Avoid assigning the Shift+Return shortcut key for a snippet.
• [trivial] Update find result messages.
• [dev] Update the build environment to Xcode 26.0.
• [non-AppStore ver.] Update Sparkle from 2.8.0-beta.3 to 2.8.0.

Fixes

• Fix an issue where the file browser doesn't show the entire filenames when the scroller slot is shown.
• Fix an issue where the “Convert Indentation” commands don’t convert if no characters are selected.
• Fix an issue where the input fields in the Find window accept rich text.
• Address a potential crash on macOS 26 that occurs when performing a keyboard shortcut.
• Address a potential crash on macOS 26 that can occur when opening a document on an Intel-based Mac.
• [trivial] Fix an issue where the default

system requirements: macOS 15 and later

New Features

• Support macOS Tahoe 26.

Improvements

• Change the system requirement to macOS Sequoia 15 and later.
• Update the user interface on macOS 26 to the Liquid Glass style.
• Update the application icon to the Liquid Glass style.
• The options to highlight matching braces have been removed and they are now always highlighted.
• Apply the text find highlighting to all split editors.
• Move selected items to the Trash by the Delete action in the file browser.
• Show also the file size of the previewed document in the status bar.
• Display the numbers of registered items below the lists in the syntax editor.
• Deprecate the feature to change t

system requirements: macOS 15 and later

Improvements

• [rc] Update screenshots in the User Guide.
• [rc] Update the Portuguese localization.

Fixes

• Fix an issue where the size of the Multiple Replace window is not stored.
• [rc] Fix an issue where the cursor in the input fields within the Find window can move unexpectedly.
• [beta] Fix an issue where the first multiple replace definition could be cleared when the setting window appears.

Full Changelog: 6.0.0-rc...6.0.0-rc.2

system requirements: macOS 15 and later

Improvements

• Display the numbers of registered items below the lists in the syntax editor.
• Deprecate the “Make Snake Case,” “Make Camel Case,” and “Make Pascal Case” commands in the Text > Transformations menu.
• [dev] Migrate the input fields in the Find window to SwiftUI.
• [non-AppStore ver.] Update Sparkle from 2.7.1 to 2.8.0-beta.3.
• [beta][dev] Update the build environment to Xcode 26.0 RC.

Fixes

• [beta] Fix an issue where the text color in the text fields within the Find window appears black in the dark mode.
• [beta] Fix the border color of setting lists in the settings win

system requirements: macOS 15 and later

Improvements

• [beta] Adjust the user interface.
• [beta] Avoid tinging folder with tags in the file browser on macOS 15.
• [beta] Tweak the application icon.
• [beta][dev] Update the build environment to Xcode 26.0 Beta 7.

Full Changelog: 6.0.0-beta...6.0.0-beta.2

system requirements: macOS 15 and later

New Features

• Support macOS Tahoe 26.

Improvements

• Change the system requirement to macOS 15 Sequoia and later.
• Update the user interface on macOS 26 to the Liquid Glass style.
• Update the application icon to the Liquid Glass style.
• The options to highlight matching braces have been removed and they are now always highlighted.
• Apply the text find highlighting to all split editors.
• Move selected items to the Trash by the Delete action in the file browser.
• Show also the file size of the previewed document in the status bar.
• Dep

system requirements: macOS 14 and later

Improvements

• Update the CSS and Go syntaxes to highlight more keywords (thanks to Karam!).
• [dev] Update Yams from 6.0.2 to 6.1.0.

Full Changelog: 5.2.2...5.2.3