Software Alternatives, Accelerators & Startups

Supabase UI VS ForthWrite

Compare Supabase UI VS ForthWrite and see what are their differences

Supabase UI logo Supabase UI

React component library for enterprise dashboards

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
  • Supabase UI Landing page
    Landing page //
    2022-04-08
  • 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.

Supabase UI

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

Supabase UI features and specs

  • Ease of Integration
    Supabase UI components are designed to integrate seamlessly with Supabase projects, making it easier for developers to add user interface elements without extensive setup or configuration.
  • Customizability
    Supabase UI offers customizable components that can be tailored to fit the unique design requirements of various projects, allowing for greater flexibility in UI design.
  • Consistency
    Using Supabase UI ensures a consistent look and feel across applications that rely on Supabase, facilitating a unified user experience.
  • Open Source
    Supabase UI is open source, meaning developers can view, modify, and contribute to the source code, fostering community involvement and transparency.

Possible disadvantages of Supabase UI

  • Limited Component Library
    Compared to more established UI libraries, Supabase UI may have a smaller set of available components, which may not cover all use cases.
  • Early Development Stage
    As a newer solution, Supabase UI might experience rapid changes and updates, possibly leading to instability or breaking changes in some releases.
  • Dependency on Supabase
    While tailored for Supabase, this tight integration may make it less ideal for projects that do not use Supabase as their backend solution.
  • Potential Learning Curve
    Developers who are not familiar with Supabase or its ecosystem might face a learning curve when trying to understand and use the UI components effectively.

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 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

Category Popularity

0-100% (relative to Supabase UI and ForthWrite)
Developer Tools
100 100%
0% 0
Writing Tools
0 0%
100% 100
Design Tools
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Supabase UI 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 Supabase UI and ForthWrite

Supabase UI Reviews

We have no reviews of Supabase UI 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, Supabase UI seems to be more popular. It has been mentiond 5 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.

Supabase UI mentions (5)

  • Supabase UI: Platform Kit
    The library is 100% shadcn/ui compatible by leveraging the component registry feature. Components are styled with shadcn/ui and Tailwind CSS and are completely customizable. Read the original launch post for more details, or check out the docs: ui.supabase.com. - Source: dev.to / 12 months ago
  • Frontend letter to frontend lovers
    Supabase have introduced new Supabase UI, just like we did iHateReading UI ๐Ÿ˜ƒ. - Source: dev.to / about 1 year ago
  • Supabase adoption guide: Overview, examples, and alternatives
    Supabase UI is an open source library of UI components that was inspired by Tailwind and Ant Design and seeks to help developers quickly build applications with Supabase. This library provides a set of pre-built components that are styled and ready to use, ensuring consistency and reducing the amount of time needed to develop the UI. - Source: dev.to / almost 2 years ago
  • User Authentication in Next.js with Supabase
    Supabase also provides an open source component library called Supabase UI, which is a collection of common UI components and utilities that are used across the range of Supabase products. Its styling is heavily inspired by Tailwind CSS, so you know it will look good out of the box. - Source: dev.to / over 4 years ago
  • The Open Source alternative to Twilio (Fonoster) is the second most popular repo in GitHub today for the Javascript category
    Nothing to do with Superbase. But because the logo is green I decided to use their site as the base for mine. No to mention that we are early adopters of https://ui.supabase.io/ (hoping they add theming soon). Source: over 4 years ago

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 Supabase UI and ForthWrite, you can also consider the following products

NextUI - NextUI is the next-gen UI React library that allows you to make beautiful websites regardless of your design experience, comes with awesome features like Auto Dark Mode recognition, Themes support, easy customization, Best-in-class DX and much more.

Superhuman - Superhuman is an email management tool.

Supabase - An open source Firebase alternative

Gemini - Gemini, formerly known as Bard, is a generative artificial intelligence chatbot developed by Google. Based on the large language model (LLM) of the same name, it was launched in 2023 in response to the rise of OpenAI's ChatGPT.

Flawwwless ui - Simplified open source React.js components library ๐Ÿš€

Lavender - Realtime coaching for sales emails.