A place for your thoughts

An AI-powered, open-source Markdown editor.
From a one-line note to equations, diagrams and the finished piece.

Download for Windows ↓ View source

Build for Linux ↗ Windows / Linux · Local files · Core writing works offline

Platform: Windows x64 · Linux
Files: Local .md files, kept as written
AI: Optional · local models or your own API key
Account: No sign-up, no cloud required
Interface: English / 简体中文 · Light / Dark
License: Open source, AGPL-3.0

Actual interface · English · Light theme

A quieter place.md — Inkstone

FileEditParagraphFormatViewTools

Inkstone writing view: file sidebar on the left, a document with an equation and a table on the right, and the AI Writing Assistant button in the title bar

1 2 3 4 5

1File sidebar

Files, outline and search, right on your local folders.

2Typography

A comfortable measure and line height; mixed English and Chinese stay clear.

3Inline math

Equations sit in the sentence. Click one to edit it.

4Tables

Edit right on the page, no switch to source needed.

5AI Writing Assistant

Scores your draft and suggests revisions in one click.

Features

01 — 04

01AI Writing Assistant

Feedback,
when you ask.

Review the whole document or a selection for an overall score, notes on each dimension and concrete revisions. Every change needs your approval, and any change can be undone.

Models: OpenAI, Claude, Gemini, DeepSeek, local models and more (11 in all)
Review: Overall score · notes by dimension · revisions
Your call: Locate, accept, dismiss or undo, one by one
Privacy: Runs only when asked; with a local model, nothing leaves your computer

Analyze & scoreOverall score and notes by dimension

AI Writing Assistant analysis: 93 out of 100, with scores and comments for purpose, clarity, organization and tone

You decide what changes

Suggested revisionLocate, accept or dismiss

A suggested revision showing the original and suggested sentence, with Locate, Accept revision and Dismiss buttons

Live previewClick an equation to open its source

Ctrl+/switches the whole document

Source modeThe same paragraph in plain Markdown

02Live preview · Source mode

Writing,
naturally.

Write Markdown directly on the page and watch headings, lists and equations take shape as you type. Click an equation to edit its source. When every character matters, switch to source mode in one step; your selection and undo history stay intact.

Shortcut: Ctrl + / Live preview ⇄ Source
Insert: Type / at the start of a line for headings, tables, math and more
Original: No silent reformatting or rewriting

03Math · Tables · Code · Diagrams

Thinking,
with structure.

Inline math, LaTeX blocks, editable tables, syntax-highlighted code and Mermaid diagrams all live in one Markdown file and render clearly on the page.

Math: Inline $…$ and display $$…$$
Code: Syntax highlighting for the language you pick
Diagrams: Mermaid flowcharts, sequence diagrams and more

Code · Tables · Math blocksIn one document

Mermaid diagramsequenceDiagram

The folder in Inkstone

The same folder on disk

Field notes/
├── assets/
├── Research/
│   └── Writing rituals.md
├── A quieter place.md
└── Reading list.md

Plain .md files that open in any editor.

HTMLOffline export

PDFOffline export

PNGOffline export

DOCX …Via Pandoc

04Local files · Offline · Export

Your files,
close at hand.

Open any folder on your computer and start writing; every document is a plain .md file. No account, no cloud, and writing works offline. When you are done, export to HTML, PDF or PNG.

Files: Folders · search · autosave · recovery
Offline: Core writing needs no connection
More formats: Word and more with Pandoc

Your next piece starts here.

You hold the pen; AI helps you polish. Get the Windows installer, or build for Linux from source.

Download for Windows ↓ View source

Windows x64 installer · .exegithub.com/JhuoW/Inkstone

:A place for your thoughts