CotEditor
A focused native editor for plain text, scripts and everyday notes.GetApache-2.0
MrEditor
A Mac editor for huge logs and CSV files that opens multi-gigabyte text instantly and can follow, filter and diff it.
MIT · Downloads from github.com
- License
- MIT
- Open source
- Source
- GitHub
- MR-TABATA
- Verified
- 2026
About MrEditor
MrEditor is aimed at text you receive rather than write: server logs, CSV exports, dumps and JSON responses. It memory-maps files and indexes lines in the background, so even multi-gigabyte logs open and scroll without loading everything into memory. Around that it offers full-file search, a filtered live-grep view, column alignment for CSV and fixed-width data, JSON pretty-printing, file comparison, tail -f-style following, and opening remote files over SSH.
Unlike most large-file viewers it also edits and saves in place. The editor in this repository is free and MIT licensed; a separately sold companion, MrkEditor, adds analysis features and is not part of this listing. MrEditor requires macOS 13 or later and is published as a disk image on GitHub.
Information
- Source code
- MR-TABATA/MrEditor
- License
- MIT
- Website
- mrktools.app
- Download
- github.com
- Category
- Developer tools
- Evidence checked
- Tags
Maco links to each project’s official download. Check its release notes for macOS version and Apple silicon support. The verification date records our license and source review, not a security audit.
Sources and image credits
- github.com/MR-TABATA/MrEditor
- github.com/MR-TABATA/MrEditor/blob/main/LICENSE
- github.com/MR-TABATA/MrEditor/releases
- mrktools.app/editor/
- icon.png: TABATA Hitoshi. MIT repository asset; MrEditor name and icon retained by the author.
License and artwork notices
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