Koi Editor

Koi Editor

Hackerman, Inc.
TextMate

TextMate

MacroMates
+
+

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About

Koi Editor is a professional text editor for Mac, built around three principles: fast, local, and scriptable. Koi is designed for responsive editing from ordinary source files to very large documents. It includes multi-cursor editing, synchronized views, project-wide search, context-aware autocomplete, syntax highlighting for 30+ languages, code folding, file outlines, configurable themes and keybindings, and extensive editing commands. Koi requires no account, includes no telemetry, and can operate entirely offline. Configuration and keybindings are plain text, and custom editor commands can be written in Python. Optional AI features connect directly to local models through Ollama for code completion and inline assistance. Built specifically for Apple Silicon Macs, Koi combines a high-performance editing core with native macOS integration.

About

Powerful and customizable text editor with support for a huge list of programming languages and developed as open source. Making multiple changes at once, swapping pieces of code, and a lot more is made trivial with TextMate’s easy way to add multiple insertion points. Select what you want to search, what you want to search for, and TextMate will present the results in a way that makes it easy to jump between matches, extract matched text, or preview desired replacements. See what files have changes in the file browser view, what lines have changes in the editor view, bring up a diff of the current file’s changes, commit a subset, TextMate supports it all for all the major version control systems. One file mixing languages? Projects using different build systems? Third party code with different formatting preferences? TextMate can handle it all by associating detailed scope selectors with key shortcuts, settings, etc.

Platforms Supported

Windows Not Supported
Mac Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software developers, programmers, and technical professionals on macOS who value fast, responsive editing, large-file performance, local workflows, keyboard-driven operation, and a scriptable environment.

Audience

Programmers interested in a customizable text editor to write documents in any language

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$195, one-time
Free for non-commercial use.
Free Version Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5

Pros & Cons from Real Users

Pros

  • All good for code editing. Syntax highlighting for every language I ever tried, code folding, custom tabs/spaces. Updates are easy and it gets syntax packages automatically if you open/save a new file type. Hybrid view of markdown, special characters and formatting both shown.

Cons

  • It's not an IDE, you won't get much help beyond auto closing brackets and quotes.

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Hackerman, Inc.
Founded: 2025
United States
koieditor.com

Company Information

MacroMates
Founded: 2021
macromates.com

Alternatives

Alternatives

Koi Editor

Koi Editor

Hackerman, Inc.

Categories

Text Editors Supported

Categories

Code Editors Supported
HTML Editors Supported
Markdown Editors Supported
Text Editors Supported

Text Editors Features

API Not Supported
Auto-Complete Supported
Code Folding Supported
Column Editing Supported
Customizable Themes Supported
Debugging Not Supported
Formatting / Table Editing Not Supported
Keyboard Shortcuts Supported
Multi-Monitor Editing Supported
Syntax Highlighting Supported
WYSIWYG Not Supported

Integrations

C Supported
C++ Supported
D Supported
HTML Supported
Haskell Supported
Java Supported
JavaScript Supported
LaTeX Supported
Lua Supported
Markdown Supported
PHP Supported
Python Supported
Ruby Supported
YAML Supported
Common Lisp Not Supported
Dash Not Supported
Grails Not Supported
Mojo Supported
Perl Not Supported
Rust Supported

Integrations

C Supported
C++ Supported
D Supported
HTML Supported
Haskell Supported
Java Supported
JavaScript Supported
LaTeX Supported
Lua Supported
Markdown Supported
PHP Supported
Python Supported
Ruby Supported
YAML Supported
Common Lisp Supported
Dash Supported
Grails Supported
Mojo Not Supported
Perl Supported
Rust Not Supported
Claim Koi Editor and update features and information
Claim Koi Editor and update features and information
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Claim TextMate and update features and information