Software Alternatives, Accelerators & Startups

p5.js VS ForthWrite

Compare p5.js VS ForthWrite and see what are their differences

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p5.js logo p5.js

JS library for creating graphic and interactive experiences

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
  • p5.js Landing page
    Landing page //
    2023-07-22
  • 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.

p5.js

Website
p5js.org
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

p5.js features and specs

  • Ease of Use
    p5.js simplifies the process of learning and creating interactive graphics with its intuitive syntax, making it accessible for beginners.
  • Web-Based
    As a JavaScript library, p5.js runs directly in the web browser, enabling easy sharing and embedding of interactive sketches online without the need for additional plugins.
  • Creative Coding Community
    p5.js is supported by a vibrant community that shares a plethora of examples, tutorials, and resources, facilitating learning and troubleshooting.
  • Extensibility
    Its modular architecture allows for easy integration with other libraries like p5.sound, p5.dom, and even external JavaScript libraries, enhancing its functionality.
  • Accessibility
    p5.js emphasizes inclusivity, offering features that make it easier to create accessible web content, such as screen reader support.

Possible disadvantages of p5.js

  • Performance
    p5.js may not be as performant as other lower-level graphics libraries or frameworks, which can be a limitation for highly intensive graphical applications.
  • Learning Curve for Advanced Features
    While beginner-friendly, mastering complex features and fine-tuning performance in p5.js can require significant effort and understanding of JavaScript.
  • Not Ideal for Large Projects
    Due to its simplicity and focus on learning and prototyping, p5.js might not be suitable for large-scale, production-grade applications.
  • Limited 3D Support
    Although p5.js offers 3D rendering capabilities, these are less developed and performant compared to dedicated 3D libraries like Three.js.
  • Dependency on JavaScript
    Since p5.js is built on JavaScript, it inherits the language's limitations and quirks, which might be a hindrance for developers accustomed to other programming languages.

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 p5.js

Overall verdict

  • p5.js is a highly regarded tool for creative coding, offering a versatile platform for interactive graphics and art. Its simplicity and powerful functionality make it a popular choice in the creative coding community.

Why this product is good

  • p5.js is considered good due to its user-friendly interface and extensive documentation, which make it accessible for both beginners and experienced developers. It's designed to make coding easy and approachable for artists, designers, educators, and beginners, focusing on the creative potential of programming.

Recommended for

  • Artists
  • Designers
  • Educators
  • Students
  • Beginners in programming
  • Anyone interested in creative coding and visual arts

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

p5.js videos

Processing or p5.js? My opinions

More videos:

  • Review - Q&A #1: Side-Scroller in p5.js
  • Tutorial - 17.11: Sound Visualization: Frequency Analysis with FFT - p5.js Sound Tutorial

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to p5.js and ForthWrite)
Javascript UI Libraries
100 100%
0% 0
Writing Tools
0 0%
100% 100
Charting Libraries
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing p5.js 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 p5.js 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 p5.js and ForthWrite

p5.js Reviews

20+ JavaScript libraries to draw your own diagrams (2022 edition)
A JS client-side library for creating graphics and interactive experiences, based on the core principles of Processing to make coding accessible to artists, designers and educators. Beyond drawing, this project provides offers web audio functionality, collision detection and even generation of graphical user interfaces from p5.js sketches.
8 Best Free and Open-Source Drawing Libraries in JavaScript
The p5.js library is a great option for people who are looking for a library that doesn't have a steep learning curve, but which can create very complicated systems if necessary. The get started with P5.js page on the official website has a functional example that draws circles wherever you move your mouse in only a few lines of code.

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, p5.js seems to be more popular. It has been mentiond 147 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.

p5.js mentions (147)

  • Generative Art over the Years
    P5.js is pretty great. I used it create art, basically taking animal photos and using the dna sequence from that animal to recreate the photo using the 4 letters. (I did four passes using different size letters and layered in Gimp). People seem to like them, and they got into an art:science show. https://p5js.org/ Coding train has a lot of videos on using p5.js. - Source: Hacker News / 3 months ago
  • Ask HN: Who Are Your Favorite Photography and Generative Coding Artists?
    p5.js is a JavaScript library that I've enjoyed messing with. It's related to Processing. https://p5js.org/. - Source: Hacker News / over 1 year ago
  • Art Blocks and the Future of Open Source with Blockchain
    Art Blocks, founded by Erick Calderon in 2020, is a platform that enables artists to create generative art using blockchain technology. It operates on the Ethereum blockchain, leveraging smart contracts to mint unique art pieces as NFTs. The process begins with artists submitting scripts that define the artwork's parameters. Once approved, these scripts generate unique pieces upon purchase, offering collectors a... - Source: dev.to / over 1 year ago
  • Rant: state of generative AI in code generation.
    In my experience with AI code generation, in visual projects like UI development or JavaScript based animation (using three.js or p5.js) etc. AI tools work pretty well. - Source: dev.to / over 1 year ago
  • Procedural Generation and Noise
    For this most recent assignment we were tasked with contributing a larger feature to an open source project. During my time with the previous assignment I worked on a game engine called Litecanvas, inspired engine by libraries like raylib and p5.js/Processing. - Source: dev.to / over 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 p5.js and ForthWrite, you can also consider the following products

Processing - C++ and Java programming at the speed of thought.

Superhuman - Superhuman is an email management tool.

Three.js - A JavaScript 3D library which makes WebGL simpler.

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.

Pixi.js - Fast lightweight 2D library that works across all devices

Lavender - Realtime coaching for sales emails.