Software Alternatives, Accelerators & Startups

Carbon VS ForthWrite

Compare Carbon VS ForthWrite and see what are their differences

Carbon logo Carbon

Create and share beautiful images of your source code.

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
  • Carbon Landing page
    Landing page //
    2023-09-17
  • 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.

Carbon

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

Carbon features and specs

  • Aesthetically Pleasing
    Carbon allows you to create beautiful images of your source code, which can be easily shared on social media, presentations, or documentation.
  • Customization Options
    Provides various customization options such as themes, background colors, window controls, font styles, and more, allowing users to create images that match their preferences or brand identity.
  • Ease of Use
    The interface is user-friendly, enabling users to create high-quality code images with minimal effort. Simply paste your code, customize it, and export.
  • Code Syntax Highlighting
    Supports syntax highlighting for a wide range of programming languages, helping to make your code snippets more readable and visually appealing.
  • Export Options
    Allows users to export images in various formats, including PNG and SVG, ensuring versatility for different use cases.

Possible disadvantages of Carbon

  • Limited Collaboration Features
    Carbon does not support collaborative editing, making it less ideal for team-based projects where multiple users might need to work on the same snippet simultaneously.
  • No Direct Code Editing Features
    Carbon focuses on code visualization and does not provide in-depth code editing capabilities, unlike full-featured code editors.
  • Dependency on Browser
    As a web-based tool, it requires an active internet connection and may be less convenient for users who prefer offline tools.
  • Performance Limitations
    For very large snippets or heavy customization, the tool may experience performance issues or slowdowns.
  • Limited Format Support
    Does not support exporting in all possible image formats or directly integrating into platforms like content management systems without manual steps.

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 Carbon

Overall verdict

  • Yes, Carbon is a good tool for creating and sharing visually appealing code snippets. It is widely appreciated in the developer community for its functionality and ease of use.

Why this product is good

  • Carbon (carbon.now.sh) is a popular tool for creating and sharing beautiful code snippets as images. It offers a clean interface, customizable themes, and syntax highlighting for numerous programming languages, making it an excellent choice for developers looking to present their code aesthetically. Its ease of use and ability to quickly generate high-resolution images are among its standout features.

Recommended for

  • Software developers looking to share code snippets on social media or blogs
  • Educators and technical writers who need to include code examples in their materials
  • Conference speakers and presenters preparing slides with code samples
  • Developers and designers seeking to build a portfolio showcasing their coding skills

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

Carbon videos

Adidas YEEZY 350 V2 Carbon REVIEW & GIVEAWAY

More videos:

  • Review - Need for Speed: Carbon review - ColourShed
  • Review - Carbon Movie Malayalam Review by Sudhish Payyanur | Monsoon Media

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Carbon and ForthWrite)
Web App
100 100%
0% 0
Email
0 0%
100% 100
Developer Tools
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Carbon 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 Carbon and ForthWrite. For example, how are they different and which one is better?
Log in or Post with

Reviews

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

Carbon Reviews

We have no reviews of Carbon yet.
Be the first one to post

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, Carbon seems to be more popular. It has been mentiond 175 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.

Carbon mentions (175)

  • Free Browser Tools for Developers Who Make Content
    Carbon and Ray.so overlap in purpose but have different strengths. Carbon gives you more control over fonts and padding โ€” better for documentation screenshots where precise readability matters more than visual flair. When I'm writing a README or a technical guide I use Carbon. When I'm posting to social I use Ray.so. Both are free, both are browser-only. Best for: README code blocks, technical documentation,... - Source: dev.to / 3 months ago
  • I asked Gemini for a prototypeโ€ฆ and Snipsco happened!
    Then I tried the free classics - Ray.so and Carbon.now.sh. - Source: dev.to / 5 months ago
  • ๐Ÿš€ 10 Tiny Dev Tools That Feel Like Superpowers (Free or Almost Free)
    Similar to Ray.so, but with more customization for code snippets. ๐Ÿ”— https://carbon.now.sh. - Source: dev.to / 12 months ago
  • Keynote tips: syntax highlighting
    Still, it's an option (a last resort one). If you have to do that, consider using some specialized code-to-image tool like carbon and not just crop an image of your editor. - Source: dev.to / 12 months ago
  • Gist Share
    I was inspired by https://carbon.now.sh/ for sharing code snippets on social media but I wanted a tight integration with Github's Gists, a focus on embedding the code in posts like Markdown with access to the code. - Source: dev.to / about 1 year 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 Carbon and ForthWrite, you can also consider the following products

Ray.so - Create beautiful images of your code

ReclaimAI - Helps users prioritize their work and personal calendars

Snappify - snappify is a great tool to create and adjust beautiful code snippets easily.

Superhuman - Superhuman is an email management tool.

Karbonized - Awesome Image Generator for Code Snippets and Mockups

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