
Free / Open-sourceCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.

ForthWrite records 5,722 monthly visits with +4.6% month-over-month growth and Freemium, Free Trial, Contact for Pricing pricing. Ghostwriter AI for Microsoft Office records 14,977 monthly visits with -33.2% growth and Paid pricing.

AI email drafting that writes in your own voice, inside Gmail and Outlook
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | forthwrite.ai | ghostwriter-ai.com |
| Pricing Model | Freemium, Free Trial, Contact for Pricing | Paid |
| Monthly Visits | 5.72K (5,722) | 14.98K (14,977) |
| MoM Traffic Delta |
|---|
| +252 (+4.6%) |
| -7.44K (-33.2%) |
| Primary Market & Share | 🇺🇸 United States (82.4%) | 🇺🇸 United States (28.5%) |
|---|
| Direct Visits / mo | 2.25K | 5.94K |
|---|
| User Rating | 4.2 | 4.2 |
|---|
| Supported Platforms | Website | Website |
|---|

AI email drafting that writes in your own voice, inside Gmail and Outlook
ForthWrite reads emails you have already sent to build a voice profile, then refreshes it roughly every 50 captured emails so drafts keep tracking how your writing evolves.
Pro users can have replies waiting when they open Gmail, and clear dozens of threads in parallel instead of writing each one by hand.
Drafts adapt tone to the person you are replying to and treat follow-ups, intros, and status updates as genuinely different jobs rather than one generic template.
Version control and A/B test your prompts, then track acceptance rate, voice match, and intent mix on a measurable improvement curve.
Privacy-first AI writing add-ins that plug directly into Word, Excel, Outlook and PowerPoint.
Works inside Word, Excel, Outlook and PowerPoint on Windows, Mac, the web and iPad through the Microsoft Office Add-in Store.
Unlock OpenAI, Google Gemini or xAI Grok models with your own API key, so you control provider choice and usage spend.
Editions ship with Quick Action prompts, agent personas, writing styles and tones, creative-level and response-length controls.
Ask Ghostwriter Excel to analyse a selected table, generate sample data, or have Ghostwriter PowerPoint produce quick bulleted facts.

Free / Open-sourceCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.


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Free / Open-sourceCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Free / Open-sourceAI contract drafting, review, and redlining grounded in millions of real agreements
Free / Open-sourceBring ChatGPT, Claude and Gemini into Google Docs, Sheets, Slides and Gmail
Free / Open-sourceAI writing assistant with autocomplete, research, and a Chrome extension
Free / Open-sourceAI proofreading that shows every change as a track-change you can accept or reject
Free / Open-sourceChatGPT inside Google Sheets and Excel, with no API keys required
Turn a few key points into polished, on-tone emails
Free / Open-sourceAI contract review and drafting inside Microsoft Word
An AI email assistant that drafts, summarizes, and perfects your messages in place
Free / Open-sourceAI autocomplete that finishes your sentences wherever you type
Draft polished, on-tone emails in seconds with an AI writing assistant