Software Alternatives, Accelerators & Startups

PrivateBin VS ForthWrite

Compare PrivateBin VS ForthWrite and see what are their differences

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PrivateBin logo PrivateBin

PrivateBin is a minimalist, open source online pastebin where the server has zero knowledge of...

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
  • PrivateBin Landing page
    Landing page //
    2021-07-25
  • 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.

PrivateBin

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

PrivateBin features and specs

  • End-to-End Encryption
    PrivateBin offers end-to-end encryption ensuring that the data is encrypted on the client-side and can only be decrypted by the recipient, enhancing security and privacy.
  • No Data Retention
    Servers running PrivateBin do not retain any data, as all messages are deleted after the predefined expiration time or when manually deleted by the user.
  • Open Source
    Being an open-source application, PrivateBin allows anyone to inspect, modify, and improve the code, fostering transparency and trust in its security measures.
  • Self-Hosting
    Users have the option to self-host PrivateBin on their own servers, giving them complete control over their data and environment.
  • No Account Required
    PrivateBin doesnโ€™t require users to create an account or provide personal information, making it a convenient, hassle-free option for quick and anonymous sharing.

Possible disadvantages of PrivateBin

  • Limited Collaboration
    Unlike some other tools, PrivateBin does not offer collaborative editing or live updates, which might limit its usability for team projects or dynamic document management.
  • Self-Hosting Complexity
    While self-hosting provides control, it also requires a certain level of technical expertise to set up, maintain, and secure the PrivateBin instance.
  • Dependency on Browser
    Since PrivateBin is primarily accessed through a web browser, its functionality is dependent on browser performance, compatibility, and security.
  • Limited Features
    PrivateBin focuses on simplicity and security, which means it lacks some advanced features found in other sharing or note-taking applications, such as rich text formatting or file attachments.
  • Expiration Constraints
    The expiration feature, while enhancing security, could be a downside for users needing persistent or long-term storage solutions.

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 PrivateBin

Overall verdict

  • PrivateBin is generally considered a good tool for securely sharing information. Its focus on privacy and data protection, thanks to end-to-end encryption and its open-source nature, makes it trustworthy for users concerned about data security. Additionally, its user-friendly interface makes it accessible even for those unfamiliar with privacy-focused technologies.

Why this product is good

  • PrivateBin is a popular choice for those looking to share information securely and privately. It is an open-source, web-based application that allows users to paste texts or files, which are encrypted client-side before being stored on the server. This means that server operators cannot view the content of the pastes. Additionally, it offers various features like setting expiration times for pastes, enabling password protection, and generating burn-after-read links, enhancing its privacy and security aspects.

Recommended for

    PrivateBin is recommended for individuals and organizations who need to share sensitive data or information privately. This includes journalists, activists, developers, or anyone working in environments where data confidentiality is critical. It's also useful for anyone who values privacy and wants to ensure that shared information does not get accessed by unauthorized parties.

Category Popularity

0-100% (relative to PrivateBin and ForthWrite)
Design Playground
100 100%
0% 0
Writing Tools
0 0%
100% 100
JavaScript
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing PrivateBin 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 PrivateBin and ForthWrite. For example, how are they different and which one is better?
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Reviews

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

PrivateBin Reviews

We have no reviews of PrivateBin 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, PrivateBin seems to be more popular. It has been mentiond 34 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.

PrivateBin mentions (34)

  • I Audited the Privacy of Popular Free Dev Tools, the Results Are Terrifying
    Just implemented e2e encryption for plan, annotation, and diff sharing of coding agents (share with your colleagues, etc), modeled after https://privatebin.info/ https://github.com/backnotprop/plannotator/pull/203. - Source: Hacker News / 4 months ago
  • We build Dropbud, place to upload files without uploading
    Is this basically https://privatebin.info/. - Source: Hacker News / over 1 year ago
  • What is the best way to learn Linux as a 10 years windows admin?
    If your like me. Find an actual use case for it and go from there. Easier to line when there is an end goal/project at the end of completion. Check out privatebin, sets up a secureway to share information. Https://privatebin.info/ Should hopefully be able to get your toes wet. Source: over 2 years ago
  • The Redditor's guide to how Kbin works (your what/how-to guide). Posting it here from r/KbinMigration as it was banned.
    You're welcome! I'd recommend PrivateBin if you're looking for a pastebin service to use. Source: about 3 years ago
  • Imgur won't work when I'm using my VPN
    One of the things that always bugged me about image hosting services is that they're almost never open source. This very unlike Pastebin services where you have Microbin and PrivateBin. A lot of popular pastebin services either use PrivateBin or Rentry under the hood. Source: about 3 years ago
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 PrivateBin and ForthWrite, you can also consider the following products

Pastebin.com - Pastebin.com is a website where you can store text for a certain period of time.

Superhuman - Superhuman is an email management tool.

GitHub Gist - Gist is a simple way to share snippets and pastes with others.

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.

hastebin - Pad editor for source code.

Lavender - Realtime coaching for sales emails.