Now Available — Microsoft Store

Write Better. Think Faster.

FastWrite is a lightweight AI-powered markdown writing tool for Windows. Draft, edit, and polish documents with the help of 7 cloud AI providers — then export to PDF, Word, or HTML in one click. Bring your own API keys. One purchase, no subscription, your writing stays on your machine.

7 AI Providers
$2.99 One-Time
3 Export Formats
Get from Microsoft Store See Features
FastWrite markdown editor — clean document view with AI panel

Writing Tools Shouldn't Cost $20 a Month

AI writing tools want a subscription. They lock you to one model, store your documents on their servers, and raise the price whenever they feel like it. FastWrite works differently.

1

Bring Your Own AI

Connect to Groq, OpenAI, Anthropic, Fireworks, Together, DeepInfra, or OpenRouter using your own API keys. Pay the provider directly — usually pennies per session. FastWrite never marks up your AI usage.

2

Your Documents Stay Yours

FastWrite saves to standard Markdown files (.md) on your computer. Open them in any text editor, version them in Git, sync them with OneDrive — they belong to you in a format that will outlast any app.

3

One Price. Forever.

$2.99 once. No subscription, no account required, no telemetry. Buy it, use it, keep it. The writing tool you own rather than rent.

Everything a Writer Needs. Nothing They Don't.

FastWrite keeps it focused. A clean editor, capable AI, and export that actually works.

✍

WYSIWYG Markdown Editor

Write in a clean visual editor — no raw syntax visible unless you want it. Headings look like headings, bold looks bold, lists look like lists. Full formatting toolbar with H1–H6, bold, italic, underline, strikethrough, alignment, tables, and more.

Looks like a word processor. Saves as markdown.
🤖

AI Chat Panel

A persistent conversation panel alongside your document. Plan, brainstorm, or ask the AI to draft directly into the document using the write_to_document protocol. Full conversation history, Clear button to start fresh, and automatic context from your current document.

7 providers. Your model. Your keys.
🎯

Surgical AI Editing

Select a paragraph and tell the AI to rewrite it — the selection replaces automatically. Or use the find-and-replace AI protocol to target specific text without touching the rest of the document. AI edits are undoable.

Edit what you mean to edit. Nothing else.
📤

Three Export Formats

Export to PDF (print-quality), DOCX (opens in Microsoft Word), or HTML (web-ready). Print directly from the app. Each format preserves your full formatting including tables, code blocks, headings, and styled text.

PDF · Word · HTML · Print
🎨

Rich Formatting Controls

Font size, font family, text color, alignment, headings H1–H6, bold, italic, underline, strikethrough, bullet lists, numbered lists, task lists, blockquotes, horizontal rules, inline code, code blocks, hyperlinks, and tables.

Everything a document needs.
🔍

Find in Document

Ctrl+F or the Find button opens an inline search bar. Previous/Next navigation highlights every match in the document. Works with Grammarly and other browser-based writing assistants.

Search. Navigate. Edit precisely.
🎙

Voice Dictation

The microphone button focuses the document and activates Windows built-in dictation (Win+H). Speak your document into existence. Everything you say goes straight into the document at the cursor.

Windows speech recognition. No extra setup.
📁

Open Any Markdown File

Open .md, .markdown, or .txt files. Set FastWrite as your default for markdown files and double-click to open from Windows Explorer. Export Settings/Import Settings backs up and restores your API keys across reinstalls.

Your files. Your default app.
WYSIWYG Editor

Write on a real page.

FastWrite renders your markdown as a polished document as you type. Headings look like headings, bold looks bold — no raw symbols cluttering your view. The full formatting toolbar puts every control one click away.

Select any text and ask the AI to rewrite, expand, or shorten it. The edit lands exactly where you selected, nothing else in the document changes.

FastWrite WYSIWYG markdown editor
AI Chat Panel

Draft with AI. Keep the conversation.

The AI panel stays open beside your document through the whole writing session. Plan what you want to write, ask the AI to draft it, refine the result — all in a running conversation that remembers what was said before.

When the AI produces something worth keeping, it writes directly into your document. Or use the ↑ Doc button on any response to push it across manually.

FastWrite AI chat panel alongside the document
Settings

Seven providers. Your keys. Your rates.

Connect to Groq, Anthropic, OpenAI, Fireworks, Together AI, DeepInfra, or OpenRouter using your own API keys. Each provider fetches its live model list — when new models release, they appear automatically without a FastWrite update.

Export your settings to back up API keys across reinstalls. Import to restore everything in one click.

FastWrite provider settings — all 7 AI providers

One Price. No Subscription. Yours Forever.

$2.99 once. The AI costs pennies per session paid directly to the provider of your choice.

FastWrite
$2.99
One-time purchase. Yours forever.
  • WYSIWYG markdown editor
  • 7 AI providers (Groq, OpenAI, Anthropic, and more)
  • AI chat panel with full conversation history
  • Surgical AI editing with undo
  • PDF, DOCX, and HTML export
  • Rich formatting toolbar
  • Voice dictation support
  • Find in document
  • Settings backup and restore
  • Future updates included
Get from Microsoft Store — $2.99

AI API costs are paid directly to each provider — FastWrite never bills you for AI usage. Groq Cloud offers generous free-tier access for casual users. Anthropic and OpenAI charge fractions of a cent per writing session at typical usage.

System Requirements

FastWrite is a lightweight desktop app. The AI does the heavy thinking in the cloud.

Operating System
Windows 10 build 17763 or later, or Windows 11
Architecture
64-bit (x64)
Disk Space
~150 MB for the application
Network
Internet connection for AI features (writing and local editing works offline)
AI Access
API key from at least one supported provider (Groq Cloud has a free tier)
GPU
Not required — all AI runs on provider infrastructure

What You Don't Get

FastWrite will never do any of these to you.

Start writing with AI — for $2.99.

FastWrite is live on the Microsoft Store. One purchase, every feature, forever.

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