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.
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.
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.
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.
$2.99 once. No subscription, no account required, no telemetry. Buy it, use it, keep it. The writing tool you own rather than rent.
FastWrite keeps it focused. A clean editor, capable AI, and export that actually works.
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.
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.
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.
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.
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.
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.
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.
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.
$2.99 once. The AI costs pennies per session paid directly to the provider of your choice.
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.
FastWrite is a lightweight desktop app. The AI does the heavy thinking in the cloud.
FastWrite will never do any of these to you.
FastWrite is live on the Microsoft Store. One purchase, every feature, forever.