Software Alternatives, Accelerators & Startups

OpenScan VS ForthWrite

Compare OpenScan VS ForthWrite and see what are their differences

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OpenScan logo OpenScan

FOSS Document Scanner

ForthWrite logo ForthWrite

Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.
Visit Website
  • OpenScan Landing page
    Landing page //
    2023-09-01
  • ForthWrite Landing Page
    Landing Page //
    2026-06-19
  • ForthWrite Dashboard
    Dashboard //
    2026-06-19
  • ForthWrite In Gmail
    In Gmail //
    2026-06-19
  • ForthWrite Pricing
    Pricing //
    2026-06-19

ForthWrite is an AI email writing assistant for Gmail and Outlook that learns your writing style from your real sent mail. The more you use it, the more it sounds like you. Get smart drafts in seconds, auto-draft replies before you open your inbox, and maintain your personal voice at scale. Free to start, no credit card required. Works inside Gmail and Outlook on the web.

How it works

ForthWrite captures your tone, sentence rhythm, and sign-offs from your actual sent emails, then uses that profile to generate drafts that match how you write, not a generic AI voice. Every draft you edit or send improves the model over time.

Key features

  • Auto-draft: replies waiting in Gmail before you open your inbox
  • Voice matching from your real sent mail, not templates
  • Recipient-aware drafts that adapt to who you are emailing
  • Prompt Lab for version-controlling and A/B testing your persona prompt
  • BYOK support: bring your own API key for Claude, OpenAI, Grok, Mistral, and more
  • Works in Gmail and Outlook on the web, plus a standalone browser widget
  • Training data export and full data portability

Who uses it

Professionals who send high volumes of relationship-critical email: lawyers, financial advisors, recruiters, account executives, founders, and anyone who wants their inbox handled without sounding like a chatbot wrote it.

Pricing

Free tier includes 10 drafts per week with no credit card required. Paid plans start at $12/month and include unlimited drafts, custom persona prompts, and auto-draft.

OpenScan

Website
github.com
Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

ForthWrite

$ Details
freemium $12.0 / Monthly (Standard plan)
Platforms
Web
Release Date
2026 June
Startup details
Country
United States
State
California
City
San Diego
Founder(s)
Curtis Boortz
Employees
1 - 9

OpenScan features and specs

  • Open-Source
    Being open-source promotes transparency and community-driven improvements, ensuring the software remains up-to-date and secure.
  • Cost-Effective
    Since it's available for free, both individuals and organizations can use the software without incurring licensing fees.
  • Community Support
    The open-source nature allows for a large community of users and developers who can provide support, share tips, and contribute to feature enhancements.
  • Customizability
    Users have the ability to modify the code base to better fit their specific needs, offering high levels of customization.
  • Wide Platform Support
    OpenScan may support multiple platforms, making it versatile for use on different operating systems.

Possible disadvantages of OpenScan

  • Technical Expertise Required
    Users may need significant programming knowledge to install, customize, and troubleshoot the software effectively.
  • Limited Official Support
    There is often no official customer support, making it potentially difficult for users to resolve issues without community assistance.
  • Documentation
    Documentation might be lacking or not up to professional standards, which can create challenges in understanding and utilizing all features.
  • Potential for Bugs
    As with many open-source projects, the software might contain bugs or be less rigorously tested compared to commercial alternatives.
  • Dependency Management
    Ensuring all dependencies are correctly installed and compatible can be a challenging and time-consuming process.

ForthWrite features and specs

  • Voice Matching
    Learns from your real sent mail, not templates
  • Auto-draft replies
    Replies waiting in Gmail before you open your inbox
  • Batch-drafting
    Draft replies for your entire inbox with one click
  • Works in browser
    Gmail, Outlook, and web browsers
  • BYOK support
    Claude, OpenAI, Grok, Mistral, and more
  • Prompt Lab
    Version control and A/B test your persona prompt
  • Free tier
    10 drafts per week, no credit card required

Analysis of OpenScan

Overall verdict

  • OpenScan is generally considered good, particularly for users who value open-source software and are looking for a powerful scanning tool that can be tailored to their needs. Its functionality and strong community support make it a competitive choice in the field of document scanning.

Why this product is good

  • OpenScan, an open-source project available on GitHub, is widely appreciated for its versatility and ease of use in scanning and digitizing physical documents. It offers a range of features, including document correction, perspective transformation, and automatic cropping. Users often highlight its high quality of scanned outputs and customizability due to its open-source nature. Additionally, the active community and frequent updates contribute to its reliability and feature enhancements.

Recommended for

  • Individuals who need a reliable, open-source document scanning solution.
  • Developers and tech enthusiasts interested in customizing and contributing to open-source projects.
  • Students and professionals requiring efficient tools for converting physical documents to digital formats.

Analysis of ForthWrite

Overall verdict

  • I don't have verified information about a product called ForthWrite (forthwrite.ai). I cannot confirm its features, quality, or reputation, so I'm unable to provide an accurate assessment of whether it's good.

Why this product is good

  • No reliable data available on this specific product in my knowledge base
  • This may be a newer product, a niche tool, or possibly a fictional/hypothetical name
  • Providing details without verified information could result in inaccurate or fabricated claims

Recommended for

  • Unable to determine without verified product information
  • Consider checking the official website, user reviews on platforms like G2 or Trustpilot, and independent tech review sites for accurate details

OpenScan videos

OpenScan Pi - 3D Scanner control interface

More videos:

  • Review - OpenScan Cloud 3D Scanning - early version
  • Review - OpenScan - Large Version

ForthWrite videos

No ForthWrite videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to OpenScan and ForthWrite)
OCR
100 100%
0% 0
Email
0 0%
100% 100
Tool
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing OpenScan and ForthWrite.

Which are the primary technologies used for building your product?

ForthWrite's answer:

Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API

What makes your product unique?

ForthWrite's answer:

ForthWrite learns your writing style from your actual sent mail, not a generic prompt. Every draft sounds like you wrote it because it was trained on how you actually write. It also auto-drafts replies before you open your inbox, so your email is partially handled before your day starts.

Why should a person choose your product over its competitors?

ForthWrite's answer:

Most AI email tools give you a blank box and a "write for me" button. ForthWrite builds a voice profile from your sent history and gets more accurate with every draft you edit or send. Unlike ChatGPT or Gemini, it works natively inside Gmail and Outlook with no copy-paste. Unlike Lavender, it writes the draft, not just scores it.

How would you describe the primary audience of your product?

ForthWrite's answer:

Professionals who send high volumes of relationship-critical email and cannot afford to sound generic: lawyers, financial advisors, recruiters, account executives, consultants, and founders managing their own inbox.

What's the story behind your product?

ForthWrite's answer:

Built out of frustration with AI writing tools that produce text that sounds nothing like the person sending it, and as a way to handle large amounts of daily email. The core insight was that your sent mail is the best training data you already have, and no tool was using it.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare OpenScan and ForthWrite

OpenScan Reviews

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ForthWrite Reviews

  1. curtisboortz
    ยท Founder at ForthWrite ยท
    I built ForthWrite to fix generic AI email, and I still use it every day

    I built ForthWrite because I kept sending emails that sounded like they came from the same generic AI as everyone else. After launching it, I still use it for my own inbox every day, which is about the most honest endorsement I can give.

    The Chrome extension lives inside Gmail and Outlook on the web. Open a thread, hit Alt+Shift+D, and a draft comes back in your voice, not a template. The free tier is real: 10 drafts per week, no API key, no credit card. Voice matching is included on free, because that is the point.

    What keeps it useful compared to Gemini or a chat tab: it learns from what you actually send. Every edit you make before hitting send becomes a signal. Over time the drafts drift closer to how you really write, and the dashboard shows the improvement curve so you can see it happening.

    The web compose surface lets you draft from forthwrite.ai without installing anything, useful for people who want to try before committing to the extension.

    Standard adds recipient-aware and intent-aware drafting plus AI coaching. Pro adds auto-draft (replies waiting when you open Gmail), batch replies, and Prompt Lab for version-controlling your prompts. Teams adds a shared persona and seat-level analytics.

    ForthWrite is not for everyone. If you just need quick replies and tone does not matter, Gemini is free and already in your inbox. ForthWrite is for people where tone does matter: client communication, relationship-driven threads, external correspondence where sounding off costs something real.

    Disclosure: I am the founder and use it daily. Happy to answer questions in the comments.

    ๐Ÿ Competitors: Jace.ai, Fyxer, Mailmeteor
    ๐Ÿ‘ Pros:    Drafts land inside gmail and outlook; no copy-pasting from a chat window|Voice matching is on the free tier, not paywalled behind paid plans|No api key, no credit card to start; free tier runs on a server-side proxy|Learns from every edit you make before sending; drafts improve over time|Full keyboard flow: alt+shift+d to draft in any thread, no mouse required|Byok on paid plans, 9 providers supported, keys encrypted at rest|Web compose at forthwrite.ai works without installing the extension at all
    ๐Ÿ‘Ž Cons:    10 free drafts/week is enough to evaluate, not enough for a heavy inbox|Auto-draft, batch replies, and prompt lab all require the pro tier|Early-stage product; fewer third-party integrations than mature inbox tools|No mobile app: the extension and add-in are desktop-only (chrome on web, or the outlook desktop add-in)

What are some alternatives?

When comparing OpenScan and ForthWrite, you can also consider the following products

GImageReader - gImageReader is a simple Gtk/Qt front-end to the Tesseract OCR Engine.

ReclaimAI - Helps users prioritize their work and personal calendars

OSS Document Scanner - Open-source mobile solution for document management; scan, recognize text, and share as PDF with ease.

Superhuman - Superhuman is an email management tool.

Tesseract - Tesseract is an optical character recognition engine for various operating systems

Shortwave - Email smarter & faster with a reinvented experience for your Gmail