Software Alternatives, Accelerators & Startups

Anime.js VS ForthWrite

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

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Anime.js logo Anime.js

Lightweight JavaScript animation library

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
  • Anime.js Homepage
    Homepage //
    2024-07-18
  • 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.

Anime.js

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

Anime.js features and specs

  • Ease of Use
    Anime.js has a clear and concise API which makes it easy to use for both beginners and experienced developers.
  • Lightweight
    With a small file size, Anime.js doesn't add much overhead to your project, helping to maintain fast load times.
  • Versatility
    Anime.js provides a wide range of animation options including CSS properties, DOM attributes, SVG, and more, making it versatile for various types of projects.
  • Performance
    Anime.js is optimized for high performance, ensuring smooth animations even with complex sequences.
  • Modular Design
    Its modular nature allows developers to import only what they need, improving efficiency and reducing bloat.
  • Comprehensive Documentation
    The official documentation is extensive and includes examples, which helps developers quickly understand and implement animations.
  • Community Support
    There is a growing community around Anime.js, providing forums, tutorials, and resources for additional support.

Possible disadvantages of Anime.js

  • Limited Built-in Easing Functions
    While Anime.js does support custom easing functions, the range of built-in easing functions is limited compared to some other animation libraries.
  • No Official Plugin System
    Anime.js does not have an official plugin system, which could limit extensibility and integration with other tools.
  • Learning Curve for Complex Animations
    For very complex animations or sequences, the learning curve can be steep, and the code may become hard to manage.
  • Lack of Native Support for 3D Animations
    Anime.js does not natively support 3D animations, which might require integrating other libraries for such requirements.
  • Dependency Management
    For projects already using other animation libraries, integrating Anime.js can add complexity to dependency management.

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 Anime.js

Overall verdict

  • Yes, Anime.js is a good and reliable choice for developers looking to implement animations on the web. It strikes a good balance between power and simplicity, making it accessible for both beginners and experienced developers.

Why this product is good

  • Anime.js is considered a versatile and powerful animation library because it provides a simple yet flexible API that makes it easy to create complex animations. It supports a wide range of properties including CSS, SVG, DOM attributes, and JavaScript objects, which gives developers a lot of creative freedom. Additionally, its lightweight nature ensures that it doesn't heavily impact the performance of web projects.

Recommended for

  • Web developers looking to create smooth and complex animations.
  • Projects that require lightweight yet powerful animation capabilities.
  • Developers who are familiar with JavaScript and prefer a straightforward API.

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

Anime.js videos

Intro to Anime.js - The JavaScript Animation Engine

ForthWrite videos

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

Add video

Category Popularity

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

Questions & Answers

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

Anime.js Reviews

Top 20 Javascript Libraries
One of the best animation libraries that makes staggering follow-through animations so simple, Anime.js is light-weight and comes with a clean yet powerful API. With Anime, timing plays an important role, and you can set various properties of CSS at different timings on the same element, and the element moves smoothly as per the transforms. Anime works with SVG, CSS, HTML,...
Source: hackr.io

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, Anime.js seems to be more popular. It has been mentiond 56 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.

Anime.js mentions (56)

  • JavaScript Awesome Package
    Animejs - Anime.js is a lightweight JavaScript animation library with a simple, yet powerful API. - Source: dev.to / 5 months ago
  • Ask HN: What are examples of open source project websites?
    Https://animejs.com/ This is a js animation library so there may be some home advantage but very well made nontheless. - Source: Hacker News / 10 months ago
  • Stripe Launches Tempo Blockchain
    Prepare to have your mind blown - https://animejs.com/. - Source: Hacker News / 10 months ago
  • Bring Your Angular App to Life with Anime.js
    With recent updates to the Angular framework, it is now recommended to move away from the @angular/animations package in favor of simpler alternatives using CSS or JavaScript. Many common animations can be accomplished with a pure CSS solution, however, JavaScript may be necessary for more complex animations. Additionally, third-party libraries, such as the CSS-based Animate.css or the JavaScript-based Anime.js,... - Source: dev.to / 11 months ago
  • 6 CSS animation libraries to bring your project to life in 2025
    Moving Letters is a CSS animations library that focuses on text animations. It uses Anime JS in the background. In principle, you can use the animations in any other element you wish, but it works best with text animations. - 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 Anime.js and ForthWrite, you can also consider the following products

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

Superhuman - Superhuman is an email management tool.

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

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.

p5.js - JS library for creating graphic and interactive experiences

Lavender - Realtime coaching for sales emails.