Software Alternatives, Accelerators & Startups

Uppy VS ForthWrite

Compare Uppy VS ForthWrite and see what are their differences

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Uppy logo Uppy

The next open source file uploader for web browsers

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
  • Uppy Landing page
    Landing page //
    2023-09-15
  • 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.

Uppy

Website
uppy.io
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

Uppy features and specs

  • Ease of Use
    Uppy provides a user-friendly interface, making it simple for users of all technical levels to upload and manage files efficiently.
  • Modular Architecture
    Uppy is designed with a modular architecture, allowing developers to pick and choose plugins and features according to their specific needs.
  • Multiple Source Support
    Uppy supports file uploads from various sources including local disk, remote URLs, cloud storage services such as Google Drive, Dropbox, and Instagram.
  • Real-time Progress
    The library provides real-time upload progress indicators, which improve the user experience by keeping users informed about their upload status.
  • Resumable Uploads
    Uppy supports resumable file uploads, allowing users to resume interrupted uploads rather than starting over from scratch.
  • Community and Documentation
    Uppy has an active community and extensive documentation, making it easier for developers to find help and integrate it into their projects.
  • Open Source
    Uppy is an open-source project, which means it can be freely used and modified, and benefits from contributions from developers around the world.

Possible disadvantages of Uppy

  • File Size Limitations
    Depending on your backend and configuration, there may be limitations on the maximum file size that can be uploaded using Uppy.
  • Complexity for Advanced Use Cases
    For more advanced use cases, such as integrating custom storage backends or complex workflows, Uppy can become complex and might require significant configuration and customization.
  • Dependency Management
    Uppy has multiple plugins and dependencies, which can make managing updates and compatibility more challenging for developers.
  • Browser Compatibility
    While Uppy supports most modern browsers, some older or less common browsers may have compatibility issues or require polyfills.
  • Performance Overhead
    The modular nature and extensive feature set can introduce some performance overhead, particularly for large-scale or high-traffic applications.
  • Learning Curve
    Although Uppy is designed to be user-friendly, there can be a learning curve for developers new to the library, especially when dealing with its more advanced features.
  • Limited Built-in Security Features
    Uppy does not provide built-in security features like file scanning for malware or deep authentication mechanisms, requiring developers to implement additional security measures.

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 Uppy

Overall verdict

  • Uppy is a solid choice for developers looking for a feature-rich file uploader with strong community support and flexibility.

Why this product is good

  • Uppy is a versatile open-source file uploader that is highly customizable and integrates easily with various back-end services. It offers a user-friendly interface, supports multiple file sources such as local files, URLs, and cloud storage providers, and provides features like resumable uploads and image previews. Its modular architecture makes it easy to extend and tailor to specific needs.

Recommended for

  • Developers building web applications requiring advanced file upload capabilities
  • Projects where integration with various cloud services is needed
  • Teams emphasizing user interface customization and extension

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

Uppy videos

Review do Inalador/Nebulizador Uppy

More videos:

  • Review - Uppy or Building aย File Uploader That Wonโ€™t Bark at the Mailman โ€” talk at Manhattan.js

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 Uppy and ForthWrite)
Digital Asset Management
100 100%
0% 0
Email
0 0%
100% 100
File Uploader
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Uppy 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 Uppy and ForthWrite

Uppy 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, Uppy seems to be more popular. It has been mentiond 12 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.

Uppy mentions (12)

View more

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 Uppy and ForthWrite, you can also consider the following products

Uploader Window - Easy File Uploader for your websites and apps

ReclaimAI - Helps users prioritize their work and personal calendars

Uploadcare - File uploading, media processing & content delivery for modern web apps

Superhuman - Superhuman is an email management tool.

Filestack - Simple file uploader and robust APIs for uploading, transforming, and delivering any file into your app. Filestack is a collection of tools and powerful APIs that make it simple to upload, transform, and deliver content.

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