Koi EditorHackerman, Inc.
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Related Products
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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.
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About
MangoWriter is a secure text editor for Windows designed to run completely offline with no cloud, AI, network connections, or telemetry, offering a familiar, simple editing experience while keeping content private by default. It uses state-of-the-art AES-256-GCM encryption with strong key derivation (Argon2id) and optional keyfile two-factor support, ensuring no plaintext is ever written to disk and eliminating caches or temp files. MangoWriter protects your work with a secure clipboard that binds copied content to the current session, an instant lock screen to mask content when stepping away, and one-click bulk redaction tools to permanently black out selected text across documents. Sensitive buffers are zeroed after use and your password never gets stored on disk, with key material kept only in secure memory while a document is unlocked. It is delivered as clean, code-signed builds available as an MSI installer or portable ZIP and includes secure export options.
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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
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Platforms Supported
Windows
Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Not Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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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.
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Audience
Professionals and individuals who need a secure offline text editor to write and protect sensitive text with strong encryption and redaction tools
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Not Supported
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$195, one-time
Free for non-commercial use.
Free Version
Supported
Free Trial
Not Supported
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Pricing
No information available.
Free Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationHackerman, Inc.
Founded: 2025
United States
koieditor.com
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Company InformationMangoWriter
mangowriter.net
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Alternatives |
Alternatives |
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Categories |
Categories |
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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
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Integrations
.NET
Not Supported
C
Supported
C++
Supported
CSS
Supported
D
Supported
HTML
Supported
Haskell
Supported
Java
Supported
JavaScript
Supported
LaTeX
Supported
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Integrations
.NET
Supported
C
Not Supported
C++
Not Supported
CSS
Not Supported
D
Not Supported
HTML
Not Supported
Haskell
Not Supported
Java
Not Supported
JavaScript
Not Supported
LaTeX
Not Supported
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