Inkwell

The sovereign markdown editor.

Lightweight, beautiful, fast, and portable.

Download

Download for Windows — inkwell-v1.2.0-windows-x64.zip

Download for macOS — Inkwell_1.2.0_aarch64.dmg

Download for Linux — inkwell-v1.2.1-linux-x64.tar.gz

Or via winget:

winget install 4Worlds.Inkwell

Getting Started

Windows: Download and unzip. Run inkwell.exe. Start writing.

Windows SmartScreen may warn you on first launch, this is expected for unsigned apps. Click "More info" → "Run anyway".

macOS: Download the .dmg and drag Inkwell to Applications.

macOS Gatekeeper may block unsigned apps. If that happens, run:

xattr -cr /Applications/Inkwell.app

Then open normally.

Linux: Download and extract, then:

chmod +x inkwell
./inkwell

Features

Workspace & File Tree — Open any folder, browse and switch between .md files from the sidebar. Persists between sessions.

Mermaid Diagrams — Write flowcharts, sequence diagrams, and more in fenced code blocks. Live rendering in the preview pane.

LaTeX Math (KaTeX) — Inline $...$ and display $$...$$ equations rendered beautifully. Full KaTeX support.

Custom Title Bar — No OS chrome. The entire window is Inkwell, themed edge to edge.

Editor — Split view with a draggable divider. Live preview as you type. Current line highlight with accent-colored cursor.

4 Themes — Editorial (warm cream), Midnight (warm charcoal), Mono (cool steel), Sepia (aged parchment). All unified by Inkwell's signature accent.

3 Font Families — Crimson Pro (serif), Inter (sans), IBM Plex Mono. Adjustable size from 14–24px.

Focus Mode — One click to hide everything except your words. Press Esc to return.

Markdown — Full GitHub Flavored Markdown. Syntax highlighting for 30+ languages. Copy buttons on code blocks. Styled tables, blockquotes, and checklists.

Files — Tabbed editing. Drag & drop. Auto-save on every keystroke. Recent files. Native save dialogs.

Images — Paste from clipboard or drag onto the editor. Large images auto-resized. Stored as data URLs, fully portable.

Templates — 10 built-in templates + save your own.

Table of Contents — Auto-generated from headings. Click to jump. Active section highlighted.

Version History — Auto-snapshots every 5 minutes. One-click restore. Diff viewer shows line-by-line changes.

Find & Replace — Ctrl+F with replace single or replace all. Match highlighting and navigation.

Typewriter Mode — Keeps the cursor line centered while typing. Toggle in toolbar.

Pro License

Inkwell is free to use forever. Write, preview, switch themes, use templates, all of it.

PDF and HTML exports require a one-time Pro license.

Get a Pro license on Gumroad →

Technical Details

What's Coming

Philosophy

Inkwell is the first release from 4Worlds, a small independent software studio building tools that respect the people who use them.

There's no cloud, telemetry, accounts, or subscriptions. Just software you own, on hardware you control.

We ship tools we use and we'd want to use ourselves.

We also believe the best tools are quiet, fast, and permanent. Inkwell is our first release, with more to come.

In this age of rapid acceleration, we believe that the most important narratives are usually the ones least talked about. That includes privacy.

Our mission is to raise awareness and facilitate workflows aligned with this ethos.

Feedback

• Documentation — guides, features, shortcuts
• Discussions — feature requests, ideas, or just say hi
• Open an issue on this repo
• Email us at studio@4worlds.dev

We build on all platforms but can't test every setup, macOS reports especially welcome.