Software Alternatives, Accelerators & Startups

Astral VS ForthWrite

Compare Astral VS ForthWrite and see what are their differences

Astral logo Astral

A social network for augmented reality ๐Ÿ“

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
  • Astral Landing page
    Landing page //
    2023-10-04
  • 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.

Astral

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

Astral features and specs

  • Open Source
    Astral is an open-source project, which means that anyone can contribute to its development, suggest features, and report issues. This creates a collaborative and transparent development environment.
  • Community Support
    Being hosted on GitHub, Astral benefits from a community of developers who can provide support, answer questions, and share improvements through issues and pull requests.
  • Customizability
    As an open-source project, users have the ability to tailor Astral to their specific needs by modifying the source code to better fit their requirements.
  • Documentation
    Astral includes documentation on GitHub, which makes it easier for users to understand how to use and contribute to the project.
  • Collaboration
    By being on GitHub, Astral encourages collaboration between developers, which can lead to faster innovation and the addition of new features.

Possible disadvantages of Astral

  • Requires Technical Knowledge
    Astral may require a certain level of technical expertise to install, configure, and modify, which can be a barrier for non-technical users.
  • Potentially Incomplete Features
    As an open-source project, some features may be in development or not thoroughly tested, possibly leading to bugs or instability in certain use cases.
  • Dependency Management
    Users need to manage the dependencies required to run Astral, which can be cumbersome, particularly when dealing with different versions and compatibility issues.
  • Maintenance
    Open-source projects rely on the community for maintenance. If the developer or community loses interest, the project might become outdated or unsupported.
  • Lack of Formal Support
    Unlike commercial software, Astral doesn't come with formal customer support, which might be an issue for users who require guaranteed assistance.

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 Astral

Overall verdict

  • Astral is a valuable tool for anyone who frequently uses GitHub and stars multiple repositories. Its ability to organize and manage stars effectively makes it a good choice for users looking for improved repository management.

Why this product is good

  • Astral is a useful tool that helps GitHub users organize and manage their starred repositories more effectively. It enhances productivity by allowing users to search and categorize their stars with tags, making it easier to find specific projects later. Beyond organization, Astral provides a clean and user-friendly interface, which enhances the overall user experience when navigating through numerous starred repositories.

Recommended for

  • Developers who actively engage with open-source projects and frequently star repositories for reference.
  • Project managers who need a tidy way to keep track of codebases and libraries they might use or contribute to.
  • Tech enthusiasts who follow multiple repositories to stay updated with the latest developments and trends.

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

Astral videos

Astral Chain Review

More videos:

  • Review - Astral - Review
  • Review - Astral Chain Nintendo Switch Review - Is It Worth It?

ForthWrite videos

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

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Category Popularity

0-100% (relative to Astral and ForthWrite)
Productivity
100 100%
0% 0
Email
0 0%
100% 100
Tech
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Astral 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 Astral and ForthWrite

Astral 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 Astral and ForthWrite, you can also consider the following products

Octotree - Github on steroids

ReclaimAI - Helps users prioritize their work and personal calendars

Decentraland - Decentraland is a marketplace that enables the users to shop all the digital assets easily, and it allows them to build creative structures in it.

Superhuman - Superhuman is an email management tool.

Metaverse - Democratized augmented reality platform: AR for everyone!

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