Software Alternatives, Accelerators & Startups

Kitty terminal VS ForthWrite

Compare Kitty terminal VS ForthWrite and see what are their differences

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Kitty terminal logo Kitty terminal

Super fast, GPU and OpenGL based terminal emulator with tiling support

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
  • Kitty terminal Landing page
    Landing page //
    2023-06-21
  • 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.

Kitty terminal

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

Kitty terminal features and specs

  • Performance
    Kitty is designed to be a fast and efficient terminal, with support for GPU rendering. This can provide smoother and quicker display updates, especially beneficial for intensive command-line tasks.
  • Features
    Kitty offers a rich set of features including support for tabs, multiple layouts, and extensions. It also supports features like ligatures, image display, and sixel graphics.
  • Customization
    Kitty is highly customizable, allowing users to modify key bindings, color schemes, and more through its comprehensive configuration files.
  • Remote Control
    Kitty provides a remote control framework, which allows users to script and control the terminal from the command line or other external programs.
  • Platform Support
    Kitty is available on multiple platforms including Linux, macOS, and Windows (through WSL), making it versatile for various operating systems.
  • Active Development
    The terminal is actively maintained by its developers, ensuring regular updates, bug fixes, and the addition of new features.

Possible disadvantages of Kitty terminal

  • Learning Curve
    Given its extensive feature set and customization options, there can be a steep learning curve for new users unfamiliar with its configuration and advanced features.
  • Configuration Complexity
    The extensive customization options, while powerful, can be overwhelming and may require a considerable amount of time to configure to a user's liking.
  • Font Support
    Although Kitty supports font ligatures and several other advanced font features, some users have reported occasional issues with font rendering and compatibility.
  • Resource Usage
    While designed for performance, the use of GPU rendering can mean higher resource usage compared to simpler terminals, which might be noticeable on older hardware.
  • Documentation
    Though extensive, the documentation can sometimes be challenging to navigate for new users, making it harder to find specific information or solutions to particular problems.
  • No Native Windows Support
    Kitty does not have native Windows support; it runs on Windows through the Windows Subsystem for Linux (WSL). This might not be ideal for users looking for a fully native Windows terminal experience.

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 Kitty terminal

Overall verdict

  • Yes, Kitty is a highly regarded terminal emulator that is considered good by many users.

Why this product is good

  • Kitty is fast, feature-rich, and supports GPU rendering, which can improve performance. It is highly customizable, supports modern terminal features, and has a friendly and active community. Additionally, it supports features like tabs, layouts, and window management, which many users find convenient.

Recommended for

  • Users who require a fast and efficient terminal emulator.
  • Those who need advanced features and customization options.
  • Developers who appreciate GPU acceleration for rendering.
  • Anyone looking for a terminal emulator with active community support.

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

Kitty terminal videos

Kitty Is A Fast And Feature Rich Terminal Emulator

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 Kitty terminal and ForthWrite)
SSH
100 100%
0% 0
Email
0 0%
100% 100
Terminal Tools
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Kitty terminal 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 Kitty terminal and ForthWrite

Kitty terminal Reviews

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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, Kitty terminal seems to be more popular. It has been mentiond 100 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.

Kitty terminal mentions (100)

  • My fully offline AI-assisted Linux development machine
    Terminal: I use Kitty. I have tabs, splits, clipboard bindings, quick access terminal, and a few custom keybindings. It is fast, it works well on Wayland, and it does not get in my way. - Source: dev.to / 3 months ago
  • Why I traded my custom "Opinionated Linux" for Omarchy
    I've been using Omarchy as my main setup since June 26, 2025, the day DHH released the first version. Before that I had my own custom Opinionated Linux, mclovin-ARCHived: an Arch + i3wm installer set up exactly the way I liked. It was total control over the OS: me deciding what goes in, keeping every piece (i3wm, polybar, picom, kitty, dotfiles) up to date and making sure they all talked to each other for the... - Source: dev.to / 3 months ago
  • Your Terminal Is Burning Battery Like It's Mining Bitcoin
    I was wondering also. If it can help, there is an overview on Kitty's website : https://sw.kovidgoyal.net/kitty/. - Source: Hacker News / 3 months ago
  • I gave my AI coding assistant a body โ€” and now it lives in my terminal
    It works on any terminal that supports the Kitty graphics protocol โ€” Ghostty and Kitty are the two main ones. - Source: dev.to / 4 months ago
  • Ghostty โ€“ Terminal Emulator
    I enjoy it, and itโ€™s great to have another modern high performance terminal as an option for macOS and Linux. For me, Kitty still has the edge: https://sw.kovidgoyal.net/kitty/ WezTerm is also a strong contender: https://wezterm.org/. - Source: Hacker News / 5 months 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 Kitty terminal and ForthWrite, you can also consider the following products

Tabby.sh - Tabby is a free and open source SSH, local and Telnet terminal with everything you'll ever need.

ReclaimAI - Helps users prioritize their work and personal calendars

iTerm2 - A terminal emulator for macOS that does amazing things.

Superhuman - Superhuman is an email management tool.

wezterm - GPU-accelerated cross-platform terminal emulator and multiplexer made with Rust.

Shortwave - Email smarter & faster with a reinvented experience for your Gmail