Software Alternatives, Accelerators & Startups

Kosy Office VS ForthWrite

Compare Kosy Office VS ForthWrite and see what are their differences

Kosy Office logo Kosy Office

Kosy is a virtual space for remote teams to work and hang out.

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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Kosy helps companies create and sustain an informal remote company culture that goes beyond current productivity tools such as Slack, Teams and Zoom. In Kosy, users interact in various types of rooms with video and audio capabilities. Room types include co-working spaces, water cooler, happy hour, focus, brainstorm, gaming many more in the roadmap. Users can jump between rooms and see in real-time what their colleagues are up to.

  • 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.

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

Kosy Office features and specs

  • User-Friendly Interface
    Kosy Office offers an intuitive and easy-to-navigate interface, ensuring users can quickly adapt and maximize productivity without a steep learning curve.
  • Collaboration Features
    The platform includes a variety of tools tailored for effective team collaboration, such as chat, video conferencing, and document sharing, facilitating seamless communication.
  • Virtual Office Experience
    Kosy Office replicates a physical office environment, allowing users to create customizable virtual workspaces that can help boost team morale and connectivity in a remote setting.
  • Integration Capability
    It offers integration with popular project management and communication tools, enabling users to consolidate workflows and reduce the need for juggling between multiple applications.
  • Scalability
    The platform is designed to scale with your business, offering solutions that can accommodate both small teams and larger enterprises, making it a versatile choice for organizations of different sizes.

Possible disadvantages of Kosy Office

  • Cost
    For smaller companies or startups, the pricing might be on the higher side compared to other basic collaboration tools, potentially making it a less accessible option.
  • Reliance on Internet Connection
    Since it is a cloud-based service, a stable and fast internet connection is required to avoid disruptions, which might not be ideal for users in areas with unreliable internet access.
  • Potential Overwhelm for New Users
    Despite its user-friendly design, the extensive features and customization options might be overwhelming for new users, requiring some initial time and effort to fully leverage the platformโ€™s capabilities.
  • Security Concerns
    As with any online platform, there are potential security concerns and risks related to data privacy and protection that companies need to consider, especially when dealing with sensitive information.
  • Dependency on Platform Updates
    Users are dependent on the provider to regularly update and maintain the platform. Any delays or issues in updates could impact the overall user experience and workflow.

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 Kosy Office

Overall verdict

  • Kosy Office is a strong choice for organizations looking to enhance their remote working environment by simulating a physical office's dynamics. Its user-friendly interface and robust features make it a valuable tool for improving team collaboration and maintaining company culture.

Why this product is good

  • Kosy Office is a virtual office platform designed to foster collaboration and communication among remote teams. It offers features such as virtual meeting rooms, customizable office spaces, and integrations with popular productivity tools. The platform aims to create a sense of presence and community, making remote work more engaging and efficient.

Recommended for

  • Remote teams seeking a virtual office environment
  • Companies looking to improve communication and collaboration among distributed employees
  • Businesses that want to maintain a sense of community and presence in a remote setting

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

Category Popularity

0-100% (relative to Kosy Office and ForthWrite)
Productivity
100 100%
0% 0
Email
0 0%
100% 100
Remote Work
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Kosy Office 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 Kosy Office and ForthWrite

Kosy Office 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)

What are some alternatives?

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

Thursday - Thursday is where remote teams do their socials.

ReclaimAI - Helps users prioritize their work and personal calendars

LifeAt.io - WFH doesnโ€™t need to be lonely or repetitive!

Superhuman - Superhuman is an email management tool.

Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat

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