Software Alternatives, Accelerators & Startups

Octopus.do VS ForthWrite

Compare Octopus.do VS ForthWrite and see what are their differences

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Octopus.do logo Octopus.do

Build your website structure in real-time and rapidly share it to collaborate with your team or clients. Start prototyping websites or apps instantly.

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.
  • Octopus.do Landing page
    Landing page //
    2022-10-11
  • 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.

Octopus.do

Website
octopus.do
$ Details
freemium $8 / Monthly
Platforms
-
Release Date
2019 February

ForthWrite

$ Details
freemium $12 / 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

Octopus.do features and specs

  • Easy to Use
    Octopus.do features an intuitive user interface that makes it straightforward to create, edit, and share sitemaps.
  • Collaboration
    The platform supports real-time collaboration, allowing multiple team members to work on the same sitemap simultaneously.
  • Visual Representation
    Octopus.do provides a visually appealing way to present the structure of a website, making it easier to understand and communicate the design.
  • Customization
    Users can customize sitemap elements, including colors, icons, and notes, to better match their project needs.
  • Cloud-Based
    Being a cloud-based tool, Octopus.do allows accessible storage and easy access from multiple devices without the need for local installations.

Possible disadvantages of Octopus.do

  • Limited Free Version
    The free version of Octopus.do has limited features and capabilities, which may not suffice for more comprehensive projects.
  • Learning Curve for Advanced Features
    While basic features are easy to use, some advanced functionalities may require a bit more time to master.
  • Price
    The subscription-based pricing model may be a barrier for freelancers or small teams with limited budgets.
  • Integration
    The tool has limited integration options compared to some competitors, making it less flexible for users who rely on multiple platforms.
  • Internet Dependence
    As a cloud-based tool, a stable internet connection is necessary to access and collaborate on projects, which can be a disadvantage in areas with poor connectivity.

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 Octopus.do

Overall verdict

  • Overall, Octopus.do is considered a good tool for web professionals who need to streamline the process of planning and designing website layouts. Its ease of use, combined with effective visualization capabilities, makes it a strong choice for website architects aiming for efficient workflow and clearer communication with stakeholders.

Why this product is good

  • Octopus.do is a tool designed for creating visual sitemaps and planning website structures. It is valued for its user-friendly interface, drag-and-drop functionality, and ability to quickly generate clear and organized visual representations of website architectures. Additionally, it offers collaboration features that allow teams to work together efficiently during the planning phase of web development projects.

Recommended for

    Octopus.do is recommended for web designers, developers, SEO professionals, content strategists, and project managers. It is particularly beneficial for teams looking for a collaborative tool to enhance the website planning process and for individuals or small teams needing a straightforward solution to create and manage visual sitemaps.

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

Octopus.do videos

Octopus.do, a lightning-fast visual sitemap builder

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Octopus.do and ForthWrite)
Design Tools
100 100%
0% 0
Email
0 0%
100% 100
Visual Sitemaps
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Octopus.do 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

Share your experience with using Octopus.do and ForthWrite. For example, how are they different and which one is better?
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Reviews

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

Octopus.do Reviews

  1. Alex
    ยท PO at Scada ยท
    It is realy super fast
    ๐Ÿ Competitors: GlooMaps
    ๐Ÿ‘ Pros:    Fast

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)

Social recommendations and mentions

Based on our record, Octopus.do seems to be more popular. It has been mentiond 12 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Octopus.do mentions (12)

View more

ForthWrite mentions (0)

We have not tracked any mentions of ForthWrite yet. Tracking of ForthWrite recommendations started around Jun 2026.

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A1 Sitemap Generator - A1 Sitemap Generator has been in active development and sold since 2005.

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