Software Alternatives, Accelerators & Startups

Carta VS ForthWrite

Compare Carta VS ForthWrite and see what are their differences

Carta logo Carta

Cartaโ€™s platform of software and services lays the groundwork so you can focus on building the future.

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
  • Carta Landing page
    Landing page //
    2022-10-09
  • 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.

Carta

Website
carta.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

Carta features and specs

  • Comprehensive Equity Management
    Carta provides a wide range of tools for managing equity, cap tables, valuations, and investments, which can help streamline complex financial processes for startups and investors.
  • User-friendly Interface
    The platform offers an intuitive and easy-to-navigate interface, making it accessible for users without extensive financial backgrounds.
  • Automation and Efficiency
    Automates many aspects of equity management, reducing the need for manual entry and minimizing errors, which can save time and effort for companies.
  • Compliance Support
    Helps ensure compliance with legal and financial regulations, which can be particularly valuable for startups that may not have in-house legal expertise.
  • Integration Capabilities
    Carta integrates with other software and platforms commonly used by businesses, such as accounting systems and HR tools, enhancing its functionality and usefulness.

Possible disadvantages of Carta

  • Cost
    The platform can be expensive, particularly for smaller startups with limited budgets. The pricing structure may not be feasible for all businesses.
  • Learning Curve
    Although the interface is user-friendly, there may still be a learning curve for users unfamiliar with equity management and financial tools.
  • Customer Support
    Some users have reported that customer support can be slow to respond or not as helpful as needed, which can be frustrating during critical times.
  • Limited Customization
    While Carta offers a wide range of features, some users may find it lacks the level of customization they need for specific use cases or unique business needs.
  • Data Migration
    Transferring existing equity data into Carta can be complex and time-consuming, particularly for companies with extensive historical data.

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 Carta

Overall verdict

  • Carta is generally considered a good platform for companies that need robust equity management solutions. It is praised for its ease of use, scalability, and the range of features it offers. However, like any service, it may not be the perfect fit for every company, and some users may find it expensive compared to alternatives.

Why this product is good

  • Carta is known for its comprehensive cap table management, equity management, and valuation services. It simplifies the process of managing stakeholder equity and can be particularly beneficial for startups and growing companies. Carta offers tools for scenario modeling, compliance, and reporting, making it easier for companies to handle complex equity structures. Additionally, Carta also provides solutions for venture capital firms to manage their portfolios.

Recommended for

  • Startups
  • Growing companies
  • Venture capital firms
  • Companies preparing for fundraising
  • Firms in need of detailed equity management and reporting

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

Carta videos

Carta Vape Rig by Focus V Official Review - CustomGrow420

More videos:

  • Review - Puffco Peak or FocusV Carta (Which one should you buy?)
  • Review - Carta review 2 months after / pros and cons

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Carta and ForthWrite)
Equity Management
100 100%
0% 0
Email
0 0%
100% 100
Cap Table Management
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Carta 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 Carta and ForthWrite

Carta Reviews

We have no reviews of Carta yet.
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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)

Social recommendations and mentions

Based on our record, Carta seems to be more popular. It has been mentiond 10 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.

Carta mentions (10)

  • Stock Options and RSU's help
    Im trying to get all of my accounts loaded into CoPilot and haven't been able to figure out how to add stock option or RSU grants from my employer. They are not publicly traded but managed through https://carta.com/. Source: over 2 years ago
  • Ask HN: Startup founders, how do you track your cap table and calculate equity?
    I heard good things about Carta. I haven't used it though. https://carta.com. - Source: Hacker News / almost 3 years ago
  • How should I make it easy and simple for investors to contribute money?
    Haven't heard of carta.com. Let me check it out, thanks! Source: over 3 years ago
  • I came up with an app idea, gathered a small team, and now two investors want in. How do I begin distributing equity?
    Https://carta.com/ could be the easiest and cheapest way. Source: over 3 years ago
  • Ask HN: Is Carta Down for Anyone?
    Getting a refusal to connect... Anyone else getting that issue? https://carta.com/. - Source: Hacker News / over 3 years ago
View more

ForthWrite mentions (0)

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

What are some alternatives?

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

Ledgy - The European equity management solution. Manage your cap table, investor relations, and equity plans professionally, from the start. Arm yourself with the best-in-class data security and streamline your equity management processes.

ReclaimAI - Helps users prioritize their work and personal calendars

Certent Equity Compensation Management - Certent Equity Compensation Management simplifies and streamlines all the crucial aspects of your stock administration process.

Superhuman - Superhuman is an email management tool.

Capdesk - Capdesk platform takes your capitalisation table out of Excel and onto a secure cloud platform.

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