Overview
Jedit is a free text editor for macOS. It supports a wide range of formats — from plain text to rich text (RTF / RTFD), Microsoft Word, and Markdown — and is optimized for authoring in both Japanese and English. Built on the lineage of Jedit Ω, a long-standing favorite among Japanese Mac users, Jedit is a general-purpose editor redesigned around the essentials that anyone needs on a daily basis.
Jedit is available free of charge on the Mac App Store, and the source code is published on GitHub under the GPLv3 license.
Fact Sheet
| Product name | Jedit |
|---|---|
| Category | Text editor for macOS |
| Version | 1.0 |
| Release date | April 19, 2026 |
| Supported OS | macOS 15.6 and later |
| Price | Free |
| Distribution | Mac App Store |
| App Store (US) | apps.apple.com/us/app/jedit/id6757590982 |
| App Store (Japan) | apps.apple.com/jp/app/jedit/id6757590982 |
| Languages | Japanese, English |
| Supported formats | Plain text, RTF, RTFD, Microsoft Word (.doc / .docx), Markdown (.md), Text Clipping |
| License | GNU General Public License v3 (with App Store exception) |
| Publisher | Artman21 Inc. (合資会社アートマン弐壱) |
| Developer | Satoshi Matsumoto (Representative, Artman21 Inc.) |
| Bundle ID | jp.co.artman21.Jedit-open |
| Source code | github.com/cometheart314/Jedit-open |
| Website | cometheart314.github.io/Jedit-open/en/ |
| Contact | Artman21 User Support — support@artman21.co.jp |
Key Features
Multiple Formats
Edit plain text, RTF, RTFD, Microsoft Word, and Markdown in a single editor.
Optimized for Japanese
Vertical text layout, automatic detection of many Japanese encodings, careful CJK typography.
Advanced Find & Replace
Regular-expression search and replace, match highlighting, persistent search history.
iCloud Drive Integration
Seamlessly sync documents across multiple Macs.
Writing Tools
Real-time character, word, and paragraph counts; configurable writing goals.
Hierarchical Bookmarks
Hierarchical navigation well suited to long-form documents.
AppleScript Support
Complete AppleScript dictionary for workflow automation.
Print Features
Fine-grained control over headers, footers, line numbers, and color printing.
Rich Display Modes
Split view, page display, rulers, line numbers, and invisible-character display.
Developer Comment
Relationship to Jedit Ω
Jedit Ω was loved by many users as a powerful text editor for the Mac, but its codebase had grown old and could no longer keep up with newer versions of macOS. For that reason, sales and support for Jedit Ω ended at the end of November 2025.
The new Jedit is a successor editor rewritten from scratch, with AI (Claude Code) adopted across the entire development process, using Jedit Ω as a reference. As part of this rewrite, we intentionally chose not to reimplement features that only a small subset of users used or that were rarely needed, and refocused the product as a general-purpose text editor centered on the features everyone uses daily.
Jedit Ω features not carried over to Jedit
- Multi-file find / replace
- Document file comparison
- Various Jedit Ω Tools menu features
- Syntax coloring
- Smart indentation and auto-completion
- Menu shortcut customization
- Key-binding customization
These features are planned for a future Jedit Pro offering.
Press Assets
The following assets are provided for use in articles, reviews, and features about Jedit. Please avoid modifying the images where possible.
License and Usage
Jedit is free software released under the GNU General Public License v3 (GPLv3). Distribution through the Mac App Store is permitted under an additional permission granted under section 7 of the GPLv3.
The app icon and screenshots included in this press kit may be used for editorial coverage, reviews, and features about Jedit. "Jedit" and "Jedit Ω" are trademarks or registered trademarks of Satoshi Matsumoto.
License details: LICENSE
Contact
For media inquiries and additional asset requests, please contact us at the following address.
Artman21 User Support
Email: support@artman21.co.jp