Jedit Open Project

JeditΩ ceased sales and support at the end of November 2025. This was due to its code becoming outdated and unable to support the new macOS. Consequently, we are currently developing a new Jedit, rewritten entirely from scratch based on JeditΩ. The new Jedit is planned for open-source release and has been named the Jedit Open Project.

TestFlight

The new Jedit currently under development can be downloaded and trialled via the following TestFlight link.

https://testflight.apple.com/join/1PZDwtQG

We would be most grateful for any feedback regarding issues or requests.

Features of the new Jedit

A complete rewrite in Swift (JeditΩ was in Objective-C). AI (Claude-code) enables rapid, high-quality source code generation. The author provided instructions solely in Japanese and wrote no source code whatsoever.

<<Specifications>>

Supports plain text, RTF, RTFD, Word documents, Open Document, and Markdown🆕 document formats.

Supports horizontal/vertical writing and page display

Supports split view

Supports paragraph numbering and row numbering

Supports display of invisible characters

Supports Japanese hanging hyphenation rules

Supports Japanese/European character separation during keyboard input

Support for resizing shapes 🆕

Support for bookmark functionality

Support for style menus and style information panels

Search now supports regular expressions, search history, saving search patterns, and incremental search 🆕

Control over context menu display items is now possible 🆕

Support for writing progress toolbar items 🆕

Support for AppleScript

🆕 : Features newly supported in Jedi

<<Differences from JeditΩ>>

The new Jedit aims to be a versatile text editor with sufficient functionality for anyone to use on a daily basis. Features used only by a select few or only rarely have been deliberately omitted.

<<Features of JeditΩ not supported in the new Jedit>>

Multi-file search/replace functionality

Document file comparison functionality

Various functions within the JeditΩ Tools menu

Syntax highlighting

Smart indexing, auto-completion

Customisation of menu shortcuts

Customisation of key bindings

<<Jedit Pro>>

We intend to support features not included in the new Jedit going forward as part of Jedit Pro. Should there be any features you would strongly prefer to see included in the new Jedit rather than Jedit Pro, please do not hesitate to contact the author with your requests.