
Miro
LucidChart
draw.io
OmniGraffle
Dia
UMLGraph
yEd
The visual workspace for teams.

ReclaimAI
Superhuman
Shortwave
Serif AI
Gemini
Gmail
LIAM
Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.
Which is more popular?
Based on our record, Whimsical seems to be more popular. It has been mentioned 60 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | whimsical.com | forthwrite.ai |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Whimsical yet.
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...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Whimsical is ideal for product managers, designers, developers, and any teams that require a collaborative platform for visualizing ideas, creating wireframes, and organizing project workflows efficiently.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
CREATE WIREFRAMES (FAST) WITH WHIMSICAL [THOUGHTS & FIRST IMPRESSIONS]
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Whimsical and ForthWrite.
ForthWrite's answer:
Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API
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.
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.
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.
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.
Share your experience with using Whimsical and ForthWrite. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of Whimsical yet. Be the first one to post
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...
Recommendations tracked on public social media and blogs since March 2021.


Use tools like Whimsical or Figma to prototype before coding. - Source: dev.to / about 1 year ago
I really do not want to see what a mail client with the UX of notion looks like. If anyone uses Notion and really cannot stand their UX, I'd strongly recommend Whimsical: https://whimsical.com/ -- it can do a bit of Trello too. - Source: Hacker News / over 1 year ago
I thought for a moment you were talking about https://whimsical.com/, which is productivity suite that people depend on for work. I wouldn't want to hear it's shutting down! Then I realized you're talking about the concept of whimsical... - Source: Hacker News / over 1 year ago
Tracking ForthWrite since Jun 2026.
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