Koi Editor

Koi Editor

Hackerman, Inc.
TextMate

TextMate

MacroMates
+
+

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About

Koi Editor is a fast, minimal, scriptable code and text editor for macOS, designed around low typing latency, large-file performance, and local workflows. Koi provides multi-cursor editing, multiple synchronized views of the same document, project-wide search, file and buffer navigation, syntax highlighting, code completion, configurable themes and keybindings, and extensive text-editing commands. The editor is designed to remain responsive with large source files, logs, and structured text, and has been tested with files containing tens of millions of lines while retaining syntax highlighting and core editing functionality. Optional AI features support local models through Ollama for code completion and inline assistance. Koi can operate entirely offline, requires no account, and includes no telemetry. Koi is built specifically for Apple Silicon Macs and combines a custom editing engine 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
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Software developers, programmers, technical users, and power users on macOS who want a fast, lightweight code and text editor, particularly for large files, local workflows, and keyboard-driven editing.

Audience

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

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

No images available

Screenshots and Videos

Pricing

$195, one-time
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

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

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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
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Hackerman, Inc.
Founded: 2025
United States
hackerman.ai

Company Information

MacroMates
Founded: 2021
macromates.com

Alternatives

Alternatives

GoCoEdit

GoCoEdit

Gogolith
Kate

Kate

KDE

Categories

Categories

Integrations

Apache Groovy
C
Common Lisp
D
Dash
Erlang
Fortran
Go
Grails
HTML
JavaScript
LaTeX
Lua
Markdown
Objective-C
Ruby
SQL
Tcl
XML
YAML

Integrations

Apache Groovy
C
Common Lisp
D
Dash
Erlang
Fortran
Go
Grails
HTML
JavaScript
LaTeX
Lua
Markdown
Objective-C
Ruby
SQL
Tcl
XML
YAML
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