Software Alternatives, Accelerators & Startups

Packet Sender VS ForthWrite

Compare Packet Sender VS ForthWrite and see what are their differences

Packet Sender logo Packet Sender

Packet Sender can send and receive UDP, TCP, and SSL on the ports of your choosing.

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.
  • Packet Sender Landing page
    Landing page //
    2023-01-29
  • 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.

Packet Sender

Pricing URL
-
$ Details
Platforms
-
Release Date
-

ForthWrite

$ Details
freemium $12 / 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

Packet Sender features and specs

  • Open Source
    Packet Sender is open source, allowing users to inspect, modify, and enhance the code according to their needs.
  • Cross-Platform Compatibility
    The application is available on multiple operating systems, including Windows, macOS, and Linux, offering flexibility and accessibility for various users.
  • User-Friendly Interface
    Packet Sender provides an intuitive and easy-to-navigate interface, making it accessible for both beginners and advanced users.
  • Versatile Functionality
    The tool supports sending and receiving TCP, UDP, and SSL packets, making it versatile for different networking needs and testing scenarios.
  • Active Development
    Regular updates and an active development community ensure the tool is continually improving and adapting to user feedback.

Possible disadvantages of Packet Sender

  • Limited Advanced Features
    While Packet Sender is excellent for basic testing, it may lack some of the advanced features found in more specialized network tools.
  • No Built-In Automation
    Packet Sender lacks extensive automation features, which might be inconvenient for users needing to perform repetitive tasks.
  • Documentation
    While adequate for basic use, the documentation may be lacking in depth for more advanced or niche use cases, requiring users to seek additional resources or community help.

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

Packet Sender videos

Dan Dangle - Packet Sender

More videos:

  • Tutorial - Tello EDU Drone Swarming Tutorial with Packet Sender and Python

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Packet Sender and ForthWrite)
Monitoring Tools
100 100%
0% 0
Email
0 0%
100% 100
Log Management
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Packet Sender 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 Packet Sender and ForthWrite

Packet Sender Reviews

We have no reviews of Packet Sender 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, Packet Sender seems to be more popular. It has been mentiond 5 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.

Packet Sender mentions (5)

  • In the Beginning...
    Starting my programming career as an Automated Tester pigeonholed me. Working on Packet Sender was the second time I worked as a Developer; the first time was as an iOS Developer on a defunct parking lot app. On that project, I wound up refactoring code and did more testing than I did developing. - Source: dev.to / 10 days ago
  • [Discussion] Send SMS (which is not 100% reliable) alternatives that don't require UI Interaction (which has it's own issues)?
    By googling around I found https://packetsender.com which is able to send-receive packets in various protocols - including UDP. It has desktop apps for Win, Mac and Linux (I used the Linux variant). In the desktop app, under the Tools menu, it has references to mobile apps for Android and iOS, but I had no luck locating them. Source: about 3 years ago
  • UART command processor, best approach?
    I've slowly transitioned most of my company's projects over to this method for in house testing/calibration and it's made a world of difference. There is something to be said about being able to open putty or Packet Sender and get intimidate feedback on what is happening without having to bust out the debugger. Source: over 4 years ago
  • DUO MFA Issues
    RADIUS uses UDP ports so you can't test it via telnet / test-netconnect (powershell), but there are 3rd party tools like Packet Sender: https://packetsender.com/. Source: almost 5 years ago
  • UDP Simulator
    Network Fuzzing is used to send network packets to test network security. You could try one of those. Here's another utility you might want to try. Source: about 5 years ago

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 Packet Sender and ForthWrite, you can also consider the following products

PortMapper - Do you need to map a specific TCP or UDP port on your machine to another port on another machine?

ReclaimAI - Helps users prioritize their work and personal calendars

Portfwd - Portfwd, Port Forwarding Daemon, stands for port forwarding daemon.

Superhuman - Superhuman is an email management tool.

socat - socat is a relay for bidirectional data transfer between two independent data channels.

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