Koi Editor

Koi Editor

Hackerman, Inc.
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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

API is first-class, discoverable, versioned, documented. MessagePack structured communication enables extensions in any language. Remote plugins run as co-processes, safely and asynchronously. GUIs, IDEs, web browsers can, embed Neovim as an editor or script host. Works the same everywhere, one build-type, one command. Modern terminal features such as cursor styling, focus events, bracketed paste. Built-in terminal emulator and strong defaults. Fully compatible with Vim's editing model and Vimscript v1. Start with :help nvim-from-vim if you already use Vim. The current stable release version is 0.5 (RSS). See the roadmap for progress and plans. With 30% less source-code than Vim, the vision of Neovim is to enable new applications without compromising Vim's traditional roles. Lua is built-in, but Vimscript is supported with the most advanced Vimscript engine in the world (featuring an AST-producing parser).

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 Supported
Mac Supported
Linux 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

Content creators, programmers, and developers searching for a hyperextensible Vim-based text editor to write and edit text files

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 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:

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Reviews/Ratings

Overall 5.0 / 5
ease 4.0 / 5
features 5.0 / 5
design 4.0 / 5
support 4.0 / 5

Pros & Cons from Real Users

Pros

  • I used it to develop Java and c++. I loved the speed and flexibility and the fact that no mouse is needed and you can have a very fast and efficient workflow using the keyboard with easy to remember neumonic s (like SF to search files) rather than holding down lots of different modifiers that are hard to remember. The editor is the focus and temporary popups are used for searching for things, call hierarchy, errors etc so you aren't rearranging splitter positions all the time. The errors were shown instantly as I typed and I could even launch my application when while it had compile errors and my refactoring was not finished. Much better than the workflow in intellij for example.

Cons

  • There is some investment time needed to learn it initially but the power and flexibility it gives you is worth it in the end.

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

Neovim
neovim.io

Alternatives

Alternatives

Nova

Nova

Panic

Categories

Text Editors Supported

Categories

Code Editors Supported
HTML 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

CSS Supported
JavaScript Supported
Lua Supported
Python Supported
TypeScript Supported
Augment Code Not Supported
C Supported
Cody Not Supported
Devin Desktop Not Supported
Forge Code Not Supported
HTML Supported
Java Supported
LaTeX Supported
Mojo Supported
Odin Supported
Ollama Supported
PHP Supported
Racket Not Supported
Tabnine Not Supported
Vim Not Supported

Integrations

CSS Supported
JavaScript Supported
Lua Supported
Python Supported
TypeScript Supported
Augment Code Supported
C Not Supported
Cody Supported
Devin Desktop Supported
Forge Code Supported
HTML Not Supported
Java Not Supported
LaTeX Not Supported
Mojo Not Supported
Odin Not Supported
Ollama Not Supported
PHP Not Supported
Racket Supported
Tabnine Supported
Vim Supported
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