Software Alternatives, Accelerators & Startups

ForthWrite VS Tennis Board

Compare ForthWrite VS Tennis Board and see what are their differences

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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.
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Tennis Board logo Tennis Board

TennisBoard provides live tennis scores, results, fixtures and ATP & WTA rankings from more than 3000 professional tennis competitions from around the world.
  • 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.

  • Tennis Board Landing page
    Landing page //
    2023-06-02

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

Tennis Board

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

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

Tennis Board features and specs

  • Centralized Tennis Community Hub
    Tennis Board serves as a dedicated online forum and community platform for tennis enthusiasts, bringing together players, fans, and coaches in one centralized location to discuss all things tennis.
  • Free Access
    The platform is freely accessible to users, allowing anyone interested in tennis to join discussions, read threads, and participate in the community without a subscription fee.
  • Diverse Discussion Topics
    The forum covers a wide range of tennis-related topics including professional match discussions, equipment reviews, technique advice, tournament coverage, and recreational play, catering to various interests within the sport.
  • Peer Knowledge Sharing
    Users can benefit from the collective knowledge and experience of other tennis players and fans, getting advice on equipment, strategy, fitness, and other tennis-related subjects from real practitioners.
  • Archived Content
    As a long-standing forum, Tennis Board has a substantial archive of past discussions and threads that serve as a valuable resource for users searching for information on tennis topics that may have already been addressed.

Possible disadvantages of Tennis Board

  • Dated Website Design
    The platform features an older-style forum layout and design that may feel outdated compared to modern social media platforms and newer community websites, potentially deterring younger or newer users.
  • Declining Activity
    Like many traditional web forums, Tennis Board may experience reduced user activity and engagement as tennis discussions have increasingly migrated to social media platforms like Reddit, Twitter, and Facebook groups.
  • Limited Moderation Challenges
    Forum-style platforms can sometimes struggle with inconsistent moderation, leading to occasional off-topic posts, heated arguments, or low-quality content that diminishes the user experience.
  • No Mobile App
    Tennis Board lacks a dedicated mobile application, which can make browsing and participating in discussions less convenient for users who primarily access the internet through their smartphones.
  • Limited Multimedia Integration
    Traditional forum platforms like Tennis Board may have limited support for embedding videos, images, and other rich media content compared to modern social media platforms, making it harder to share visual tennis content effectively.

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

Analysis of Tennis Board

Overall verdict

  • Tennis Board appears to be a niche platform related to tennis content, tools, or community features, but limited public information and reviews make it difficult to fully verify its quality, reliability, or feature set at this time.

Why this product is good

  • May offer tennis-specific tools, rankings, or community engagement for enthusiasts
  • Niche focus could provide more targeted content than general sports sites
  • Potentially useful for tracking tennis-related data or discussions

Recommended for

  • Tennis enthusiasts looking for niche content
  • Users seeking community-driven tennis discussions
  • Casual fans wanting simple tennis tracking tools

Category Popularity

0-100% (relative to ForthWrite and Tennis Board)
Email Productivity
100 100%
0% 0
Sports
0 0%
100% 100
Email
100 100%
0% 0
Tennis
0 0%
100% 100

Questions & Answers

As answered by people managing ForthWrite and Tennis Board.

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 ForthWrite and Tennis Board

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)

Tennis Board Reviews

We have no reviews of Tennis Board yet.
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What are some alternatives?

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

ReclaimAI - Helps users prioritize their work and personal calendars

Matchday Tennis - Tennis team organization and score keeping made simple.

Superhuman - Superhuman is an email management tool.

The Tennis Wizard - The Tennis wizard had come up in the market by adjoining multiple tennis mental training for players. If you are looking to improve your UTR (Universal Tennis Rating), you are on the right platform.

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

Playeasy - An online marketplace for finding & booking athletic space.