Koi Editor

Koi Editor

Hackerman, Inc.
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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

Quiver is a notebook built for programmers. It lets you easily mix text, code, Markdown and LaTeX within one note, edit code with an awesome code editor, live preview Markdown and LaTeX, and find any note instantly via the full-text search. A note in Quiver is comprised of cells, snippets of text, code, Markdown, LaTeX (via MathJax) or diagrams (sequence diagram, flowchart). You can freely mix different cell types within one note. You can set different languages for different code cells, too. The programmer's notebook should make code editing effortless. Quiver packs the awesome ACE code editor in code cells, with syntax highlighting support for more than 120 languages, over 20 themes, automatic indent and outdent, and much more. Quiver lets you write in Markdown with inline formatting and custom CSS options. A live preview window renders Markdown as you type. Quiver uses MathJax to typeset mathematical equations written in LaTeX.

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 and developers looking for a notebook solution to mix and edit text, code, and Markdown

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

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
support 5.0 / 5

Pros & Cons from Real Users

Pros

  • Brilliant app, best note taking app for developers. Nothing comes close other than maybe Obsidian and Joplin, but Quiver has them both beat.

Cons

  • App has not been updated to work with Mac's next gen OS (MacOS 27+)

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

Quiver
Founded: 2019
HappenApps
happenapps.com

Alternatives

Alternatives

GoCoEdit

GoCoEdit

Gogolith
Nova

Nova

Panic

Categories

Categories

Integrations

CSS
Dropbox
Google Drive
HTML
JSON
LaTeX
Legion
Markdown
SnippetsLab
iCloud

Integrations

CSS
Dropbox
Google Drive
HTML
JSON
LaTeX
Legion
Markdown
SnippetsLab
iCloud
Claim Koi Editor and update features and information
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