Software Alternatives, Accelerators & Startups

Responsively VS ForthWrite

Compare Responsively 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.

Responsively logo Responsively

Develop responsive web-apps 5x faster!

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.
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  • Responsively Landing page
    Landing page //
    2023-10-16

A web browser that aids responsive web app development. Preview all target screens in a single window side-by-side. Brings down your development time. Use your already-familiar dev-tools from the browser. No additional learning curve!

  • 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.

Responsively

Pricing URL
-
$ Details
free
Platforms
Windows Mac OSX Linux
Release Date
2020 May

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

Responsively features and specs

  • Multi-device Preview
    Allows simultaneous preview of a website on different device screen sizes, facilitating responsive design testing and debugging.
  • Open Source
    Being an open-source project, it allows for community contributions, transparency, and no licensing fees.
  • Sync Scrolling and Clicks
    Enables synchronized scrolling and clicking across all previews, making it easier to test interactions and layouts uniformly.
  • Customizable Viewports
    Users can add, remove, or adjust predefined viewports to match specific device requirements or test cases.
  • Lightweight and Fast
    Designed to be performant and quick, reducing the overhead on development machines and improving productivity.
  • Cross-platform
    Compatible with multiple operating systems, including Windows, macOS, and Linux, ensuring broader user adoption.

Possible disadvantages of Responsively

  • Limited Browser Support
    May not offer the same level of browser compatibility testing as dedicated tools like BrowserStack or Sauce Labs.
  • Steep Learning Curve
    New users might require some time to get accustomed to the interface and functionalities compared to more straightforward testing tools.
  • Resource Intensive
    Running multiple device previews simultaneously can consume considerable system resources, which might slow down other tasks.
  • No Cloud Integration
    Lacks integration with cloud services for remote testing, unlike some paid alternatives.
  • Dependence on Electron
    As an Electron-based app, it might have a larger memory footprint compared to native applications.

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 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

Responsively videos

Responsively App Demo

More videos:

  • Review - Responsively Style Checkboxes, freeCodeCamp Bootstrap Review, lesson 16
  • Review - Line up Form Elements Responsively with Bootstrap, freeCodeCamp Bootstrap Review, lesson 18

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Responsively and ForthWrite)
Design Tools
100 100%
0% 0
Writing Tools
0 0%
100% 100
Developer Tools
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Responsively 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 Responsively 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 Responsively and ForthWrite

Responsively Reviews

  1. Open source and best
    ๐Ÿ Competitors: Sizzy, Polypane

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, Responsively seems to be more popular. It has been mentiond 46 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.

Responsively mentions (46)

  • Best Free Tools for Frontend Developers to Speed Up Workflow
    ๐Ÿ” 5. Responsively App Testing responsiveness on multiple devices? Responsively App is an open-source tool that lets you preview your site across devices side-by-side. - Source: dev.to / about 1 year ago
  • Polypane, The browser for ambitious web developers
    To save other readers a click: https://responsively.app/. - Source: Hacker News / over 1 year ago
  • 22 Unique Developer Resources You Should Explore
    URL: https://responsively.app What it does: View your website across multiple devices and screen sizes simultaneously. Why it's great: Perfect for real-time responsive testing โ€” save time and effort! - Source: dev.to / over 1 year ago
  • Responsively App: The Ultimate Tool for Web Developers on Windows
    You can download Responsively App from their official website. - Source: dev.to / over 1 year ago
  • My Hacktober Journey as a Contributor
    Hacktoberfest has been an incredible ride! As a maintainer of the Responsively App, Iโ€™ve had the privilege of witnessing developers come together to support and improve our open-source project. Seeing the growth in contributions this year has been both surprising and inspiring. Itโ€™s been a chance for us to engage with developers who are as excited about improving Responsively as we are. - Source: dev.to / over 1 year ago
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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 Responsively and ForthWrite, you can also consider the following products

Polypane - The browser for ambitious web developers that want to 5ร— their quality and efficiency.

Superhuman - Superhuman is an email management tool.

Sizzy - The browser for designers and developers

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.

Google Chrome - Google Chrome is a fast, secure, and free web browser, built for the modern web. Give it a try on your desktop today.

Lavender - Realtime coaching for sales emails.