Software Alternatives, Accelerators & Startups

KeywordTool.io VS ForthWrite

Compare KeywordTool.io VS ForthWrite and see what are their differences

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KeywordTool.io logo KeywordTool.io

KeywordTool.io is the best FREE alternative to Google Keyword Planner and Ubersuggest. It uses Google's autocomplete feature to get over 750+ long-tail keywords for any given query.

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
  • KeywordTool.io Landing page
    Landing page //
    2022-10-14
  • 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.

KeywordTool.io

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

KeywordTool.io features and specs

  • Ease of Use
    KeywordTool.io features a user-friendly interface that makes it simple for beginners and experts alike to perform keyword research.
  • Multiple Platforms
    It supports multiple platforms including Google, YouTube, Bing, Amazon, and more, allowing users to gather keywords from various sources.
  • Keyword Suggestions
    The tool provides extensive keyword suggestions, enabling users to uncover long-tail keywords that might be missed by other tools.
  • Localization
    It offers keyword research for different countries and languages, making it versatile for global SEO campaigns.
  • Export Feature
    Users can easily export their keyword lists into CSV format for further analysis and tracking.

Possible disadvantages of KeywordTool.io

  • Free Version Limitations
    The free version has limited features and does not provide complete data, which can restrict its usefulness for in-depth research.
  • Pricing
    The pricing plans can be relatively high compared to other keyword research tools, which might be a barrier for small businesses or individual users.
  • Data Depth
    The tool may not offer as much in-depth data on search volume, competition, and trends compared to more comprehensive tools like Ahrefs or SEMrush.
  • Customer Support
    Some users report that the customer support could be more responsive and helpful, which can be a drawback when encountering issues.
  • No Backlink Analysis
    KeywordTool.io primarily focuses on keyword research and does not offer backlink analysis, which is a crucial aspect of SEO for many users.

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 KeywordTool.io

Overall verdict

  • KeywordTool.io is a reliable and efficient tool for keyword research, particularly for those who need quick, diverse, and relevant keyword suggestions based on Google Autocomplete. Its ability to generate a broad list of keywords makes it a good choice for marketers and content creators looking to enhance their online visibility.

Why this product is good

  • KeywordTool.io is regarded as a useful tool for generating keyword ideas by leveraging Google Autocomplete. It's appreciated for its ease of use and ability to provide a large variety of keyword suggestions for SEO, content creation, and PPC campaigns. The tool offers country and language-specific keyword ideas and supports multiple platforms like Google, YouTube, Bing, Amazon, Instagram, and more.

Recommended for

    This tool is recommended for digital marketers, SEO specialists, content creators, bloggers, and PPC advertisers who are looking for a quick and efficient way to brainstorm keyword ideas and gain insights into search trends across multiple platforms.

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

KeywordTool.io videos

Keywordtool.io Review: Best Keyword Research Tool in SEO

More videos:

  • Review - KeywordTool.io Review | An Alternative Keyword Research Tool [CC]

ForthWrite videos

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

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Category Popularity

0-100% (relative to KeywordTool.io and ForthWrite)
SEO Tools
100 100%
0% 0
Writing Tools
0 0%
100% 100
SEO
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing KeywordTool.io 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

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Reviews

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

KeywordTool.io Reviews

We have no reviews of KeywordTool.io yet.
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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, KeywordTool.io seems to be more popular. It has been mentiond 16 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.

KeywordTool.io mentions (16)

  • 120 Blog-Posts: One gets 83% of the search traffic (3k/month). What now?
    Thank you! At that time I used ahrefs but I think in my situation it is too expensive for me rn (since my SEO "casestudy" which got a real business for me, I got 3 clients for SEO, so wanna grow a lil bit and than buy ahrefs). So I use: - Google Keywordplanner, Trends and Google itself - ChatGPT (Webpilot Plugin) - keywordtool.io (only free, not paid) - ahrefs keyword Generator - other Blogs and Websites in... Source: about 3 years ago
  • API Keyword service that can return search volume?
    I've checked https://keywordtool.io/ but 50 API Requests Per Day for their most expensive plan is a deal breaker, it needs to be in the thousands at least. Source: about 3 years ago
  • How to get a CPC of over 50 USD on YouTube? Is it even possible?
    Two days ago I had a CPC of over 33 USD I got only 300 views yet Made a total of 1.92 USD that day which made me wonder how can I get a CPC of over 50 USD. Saw an article on medium guy who said he made 20k USD with only 750 k views and claimed to have over 100 USD CPC is that even possible? Now here is the strange part I used keywordtool.io to search for my main target keyword which is Reddit and it said my CPC... Source: over 3 years ago
  • Reverse Engineering - HELP
    How do sites like this calculate the various values? Source: over 3 years ago
  • 10 Tips on How to Write a Great SEO-Friendly Blog Post
    Use a keyword research tool first. You may learn more about what people are searching for and how popular those questions are by visiting websites like Keyword Tool, Google Keyword Planner, or Ubersuggest. Source: over 3 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 KeywordTool.io and ForthWrite, you can also consider the following products

Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.

Superhuman - Superhuman is an email management tool.

Keywords Everywhere - Free browser add-on for keyword volume, CPC & competition

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.

Soovle - Soovle is a customizable search engine provides the search suggestion of the best provider on the net.

Lavender - Realtime coaching for sales emails.