Software Alternatives, Accelerators & Startups

Whale VS ForthWrite

Compare Whale VS ForthWrite and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Whale logo Whale

Video Q&A with influencers and experts ๐Ÿณ

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
  • Whale Landing page
    Landing page //
    2023-02-08
  • 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.

Whale

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

Whale features and specs

  • Productivity Features
    Naver Whale includes integrated tools like a sidebar for quick access to apps, a built-in split-screen feature for multitasking, and an address bar calculator, enhancing user productivity.
  • Translation Capabilities
    With built-in translation, Whale facilitates easy comprehension of foreign language websites, making it ideal for users who frequently visit international sites.
  • Customization Options
    Whale offers extensive customization options, allowing users to personalize their browsing experience with various themes and extensions.
  • Performance Efficiency
    The browser is engineered to be lightweight, therefore it consumes less memory and system resources, which can be beneficial for users with lower-end devices.
  • Security Features
    Naver Whale includes security features like private browsing and tracker blocking, providing a safer online experience.

Possible disadvantages of Whale

  • Limited Extension Ecosystem
    Compared to more established browsers like Chrome and Firefox, Whaleโ€™s extension ecosystem is relatively limited, which may restrict advanced users.
  • Regional Focus
    Whale is tailored predominantly for the South Korean market, which might result in some features or support options being less relevant or unavailable to international users.
  • Learning Curve
    The additional features and tools, while useful, can create a steeper learning curve for new users transitioning from simpler browsers.
  • Platform Availability
    Naver Whale is currently available only for Windows, macOS, and Android, limiting its accessibility for users of other platforms like iOS.
  • Potential for Bloat
    Despite being lightweight, the numerous integrated features might make the browser feel bloated or overly complex for users who prefer minimalistic browsing.

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 Whale

Overall verdict

  • Whale is a good browser, especially for users who are looking for a comprehensive tool that combines web browsing with multi-tasking capabilities and seamless integration with Naver's ecosystem of services.

Why this product is good

  • Whale, developed by Naver, is a web browser known for its integration with Naver services and features tailored for productivity and convenience. It offers functionalities like split-screen view, smart translation, and a user-friendly design. It also supports various extensions, making it a powerful option for users who rely heavily on web applications.

Recommended for

  • Users who frequently use Naver services.
  • Individuals who benefit from productivity tools like split-screen and smart translation.
  • Anyone looking for a feature-rich browsing experience.

Whale videos

Children of the Whales Review in 5 Minutes

More videos:

  • Review - Orca: The Killer Whale (1977) REVIEW - JAWS MONTH
  • Review - WORLDE BLUE WHALE 49 REVIEW

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Whale and ForthWrite)
Web Browsers
100 100%
0% 0
Writing Tools
0 0%
100% 100
Web Development Tools
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Whale 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 Whale 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 Whale and ForthWrite

Whale Reviews

  1. This is amazing.

    It's VERY customizable! You can add your own search engine, customize colors, and more!

    ๐Ÿ‘ Pros:    Highly customizable|Fast|Clean ui

The 10 BEST Employee Onboarding Software Options 2024
Whale helps us a lot with streamlining our onboarding process. Whale just automates the assignment of different onboarding documents. We just add a new hire to a group, and the system does the rest for us.
Source: usewhale.io
5 Best SOP Software Tools: How to Choose the Right One
Itโ€™s very manual to install the suggestions. Once everything is installed, itโ€™s ep-ic but it can take some time so donโ€™t wait long to do it. Start while youโ€™re creating your documentation in Whale.
Source: usewhale.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, Whale seems to be more popular. It has been mentiond 6 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.

Whale mentions (6)

  • What's the best looking browser for windows?
    Might check out Naver Whale and Yandex Browser. Source: about 3 years ago
  • seems like firefox is like getting worse market share idk
    Why not use it - https://whale.naver.com/en/. Source: over 3 years ago
  • best browsers for february?
    I would NEVER use anything else than Firefox as my main browser. HOWEVER, I'm always looking for a secondary browser that I can use for a quick consult or managing my router settings quickly without wasting too much RAM in the process. Until a few days ago, Thorium was the best one I could find, blazing fast, low RAM usage; but now I am trying Naver Whale and, with the exact same number of tabs and extensions... Source: over 3 years ago
  • I need an aesthetically pleasing browser
    If you don't mind about privacy, try opera, then yandex, then whale. Source: over 3 years ago
  • Android pokes IPhone with Drake's "Texts Go Green"
    In South Korea, we see a similar story except the Samsung browser is another player. But Chrome+Samsung+Whale aren't really losing ground to Safari:. Source: about 4 years 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 Whale and ForthWrite, you can also consider the following products

qutebrowser - An actively developped, keyboard-focused browser with a minimal GUI, inspired by other...

Superhuman - Superhuman is an email management tool.

Pale Moon - Pale Moon is an Open Source, Mozilla-derived web browser available for Microsoft Windows and Linux, focusing on efficiency and ease of use.

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.

Comodo Dragon Internet Browser - Web Browser

Lavender - Realtime coaching for sales emails.