Software Alternatives, Accelerators & Startups

Pencil2D VS ForthWrite

Compare Pencil2D VS ForthWrite and see what are their differences

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Pencil2D logo Pencil2D

Pencil2D is an opensource animation/drawing software for Mac OS X, Windows, and Linux, based on old...

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
  • Pencil2D Landing page
    Landing page //
    2021-10-15
  • 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.

Pencil2D

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

Pencil2D features and specs

  • Open Source
    Pencil2D is open-source software, meaning it's free to use and its code can be modified to fit specific needs.
  • User-Friendly Interface
    The software features a simple and intuitive interface, making it accessible for beginners as well as advanced users.
  • Cross-Platform
    Pencil2D runs on Windows, macOS, and Linux, providing flexibility regardless of the user's operating system.
  • Lightweight
    Pencil2D is a lightweight application, requiring minimal system resources, which is ideal for users with older or less powerful computers.
  • Bitmap and Vector Drawing
    The software supports both bitmap and vector graphics, allowing for a versatile range of creative outputs.

Possible disadvantages of Pencil2D

  • Limited Features
    Pencil2D lacks some advanced features found in other more professional animation software, such as complex effect layers and robust 3D capabilities.
  • Occasional Bugs
    Being an open-source project, users may encounter bugs or stability issues. Development is ongoing, but updates can be sporadic.
  • Lack of Advanced Tools
    The software does not include many advanced animation tools or features that professionals might require for complex projects.
  • Learning Resources
    There are relatively fewer tutorials and learning resources available compared to more established software, which might make the learning curve steeper for some users.
  • Limited Export Options
    The range of export formats is somewhat limited compared to more comprehensive animation software, which could restrict usability for certain projects.

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 Pencil2D

Overall verdict

  • Pencil2D is a good option for those seeking a free and simple animation tool without the steep learning curve associated with more complex software. It may not have the advanced features found in professional-grade programs, but it is well-suited for hobbyists and learners.

Why this product is good

  • Pencil2D is an open-source and user-friendly program designed for creating hand-drawn animations. It offers a straightforward interface, making it accessible for beginners. The software supports both bitmap and vector graphics, allowing for flexibility in animation styles. Additionally, it's lightweight, performs well on most computers, and is continually updated by a dedicated community.

Recommended for

  • Beginners in animation
  • Artists interested in traditional hand-drawn techniques
  • Hobbyists looking for free and open-source software
  • Educators and students focused on learning animation fundamentals

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

Pencil2D videos

Pencil2D v0.6 Review

More videos:

  • Review - Pencil2D v0 6 3 Ft Huion Tablet H 2

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Pencil2D and ForthWrite)
Animation
100 100%
0% 0
Email
0 0%
100% 100
2D Animation
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Pencil2D 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 Pencil2D and ForthWrite. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare Pencil2D and ForthWrite

Pencil2D Reviews

10 Best 2D Animation Software in 2022 [Free/Paid]
Want an open-source and free 2D animation design software to help you create videos? Pencil2D animation is the type of program that can help beginners.
The 10 best free animation software in 2021
โ€œPencil2D: The easiest and simplest program to do 2D animation. If you're going to rely on frame by frame hand drawn animations for your game then this is easy and simple enough to do it perfectly. But if you need anything else then it's super lacking unfortunately.โ€ - u/xTMT, Reddit
Top 5 Open Source Animation Software In 2021
With minimal design and easy to understand interface, Pencil2D is one of the best animation software for beginners. It is an easy to use, open source and free 2d animation software. Pencil2D community is always updating the software by releasing new updates and fixing any errors or bugs. As a free to download application, it is released under the GNU General Public License,...
14 BEST 2D Animation Software in 2020 [Free/Paid]
Pencil2d is a 2D hand-drawn animation software. It is easy to use and lightweight. It is a 2D animation software for free which allows you to sketch ink and paint on the go.
Source: www.guru99.com
10 Adobe Animate Alternatives in 2020
Due to a clear and intuitive interface, even a beginner can quickly figure out all features of the software. Pencil 2D enables you to work with layers, manipulate key frames in the timeline, use onion skin feature, adjust colors and pressure sensitivity, as well as rearrange workspace toolbars and panels according to your preferences.
Source: fixthephoto.com

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 Pencil2D and ForthWrite, you can also consider the following products

OpenToonz - OpenToonz is an animation program that is a free software version of Toonz, the animation software...

Superhuman - Superhuman is an email management tool.

Synfig Studio - Just another WordPress site

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.

Adobe Animate - Adobe Animate is a Flash, vector animation software.

Lavender - Realtime coaching for sales emails.