Software Alternatives, Accelerators & Startups

Horde VS ForthWrite

Compare Horde VS ForthWrite and see what are their differences

Horde logo Horde

Horde Groupware is a free, enterprise ready, browser based collaboration suite.

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
  • Horde Landing page
    Landing page //
    2023-04-22
  • 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.

Horde

Website
horde.org
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

Horde features and specs

  • Open Source
    Horde Groupware is free and open-source, allowing users to modify and customize the software according to their needs without any license fees.
  • Wide Range of Features
    It includes a comprehensive set of tools such as email, calendar, contacts, tasks, notes, and file management, making it a versatile solution for group collaboration.
  • Web-Based Interface
    The web-based interface enables users to access groupware functionalities from any device with an internet connection, enhancing remote work and collaboration.
  • Active Community Support
    Being open-source, Horde Groupware has a community of developers and users who contribute to forums, documentation, and code improvements.
  • Modular Architecture
    Its modular design allows users to enable or disable components and integrate additional functionalities according to their requirements.

Possible disadvantages of Horde

  • Complex Setup
    The installation and configuration process can be complex and time-consuming, requiring a certain level of technical expertise to set up correctly.
  • User Interface
    The user interface may not be as polished or intuitive as some commercial alternatives, potentially resulting in a steeper learning curve for new users.
  • Limited Out-of-the-Box Integration
    The default setup may have limited integration with third-party apps or services, potentially requiring additional customization to meet specific needs.
  • Server Resources
    Running Horde Groupware can be resource-intensive, necessitating adequate server capabilities to ensure smooth performance for all users.
  • Community-Driven Support
    While there is community support, users may find it less reliable than commercial support options, with responses sometimes slower and less definitive.

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 Horde

Overall verdict

  • Horde is generally considered a good choice for users or organizations that require a flexible and open-source web application framework. Its longstanding presence in the market and extensive feature set make it a viable option for those who can invest time in customizing and maintaining it.

Why this product is good

  • Horde is a web application framework that offers a wide array of web applications and services, focusing on email and groupware solutions. It is open-source, highly customizable, and has been in development for many years, providing a reliable and robust platform for organizations seeking a comprehensive suite of collaborative tools.

Recommended for

  • Organizations seeking open-source email and groupware solutions.
  • Users who need a platform that can be customized extensively.
  • IT teams that have the expertise to manage and maintain a self-hosted solution.
  • Developers looking for a framework to build customized web applications.

Horde videos

The Horde - Movie Review (2009)

More videos:

  • Review - Undead Horde Review | Is This Game Worth Your time? | Ps4 | Xbox One | Gameplay
  • Review - They Are Billions Can't Handle the Horde | Review
  • Demo - Horde Email and Groupware Tutorials
  • Review - Horde Webmail

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Horde and ForthWrite)
Email
94 94%
6% 6
Writing Tools
0 0%
100% 100
Email Management
100 100%
0% 0
Email Clients
100 100%
0% 0

Questions & Answers

As answered by people managing Horde 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 Horde and ForthWrite. For example, how are they different and which one is better?
Log in or Post with

Reviews

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

Horde Reviews

Top 15 Self-hosted open-source free web-based email clients
Horde is an open-source groupware solution for teams and communities. It offers a webmail edition, a responsive interface and customizable dashboard.
Source: medevel.com
15 Best iRedMail Alternatives 2021
The Horde platform offers a PHP framework with applications and libraries for creating a customized environment that suits your workflow. Your Horde webmail supports POP3 and IMAP protocols and HTML message composition.
Top 10 Webmail Clients in 2021
Horde Horde is more just a mail client, it is an enterprise-focused groupware. Horde is capable to read, send and organize mail correspondence, fully manage contacts, calendars, tasks and various notes. Horde is using its own PHP framework with libraries to insure possibility of building custom solutions.
Source: www.plesk.com
5 open source webmail clients for browser-based email
More than just a mail client, Horde is full-fledged enterprise-ready groupware. The Horde suite is browser based, and includes web apps for reading, sending and organizing email, managing and sharing calendars, contacts, tasks, and notes. In addition, the Horde project provides a PHP framework with libraries and apps for building out a customized working environment.
Source: opensource.com
6 Contenders for Best Microsoft Exchange Alternative
Horde is a fully open source webmail client and โ€œenterprise-ready, browser-based communication suite.โ€ Although its functionality isnโ€™t quite as advanced as that of Office 365 or G Suite, it does offer more productivity features than the traditional webmail client, as well as advanced access controls for more granular user permissions. At the exceptionally low cost of free,...

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)

What are some alternatives?

When comparing Horde and ForthWrite, you can also consider the following products

Mailpile - Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.

Superhuman - Superhuman is an email management tool.

Mailo - Mailo is an email client where you can send and receive emails to and from anyone with an email address.

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.

HEY - Email at its best, new from Basecamp.

Lavender - Realtime coaching for sales emails.