Software Alternatives, Accelerators & Startups

Warrant VS ForthWrite

Compare Warrant VS ForthWrite and see what are their differences

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Warrant logo Warrant

Authorization and access control infrastructure for developers

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.
  • Warrant Landing page
    Landing page //
    2023-08-05
  • 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 / 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

Warrant features and specs

  • Flexibility
    Warrant provides a highly flexible authorization system that can be tailored to fit various application requirements, enabling developers to implement precise access control rules.
  • Integration
    The platform offers seamless integration with existing systems and applications, allowing for easy adoption and minimal disruption to pre-existing workflows.
  • Scalability
    Warrant is designed to handle a large number of requests, making it suitable for applications that need to scale and support a growing user base.
  • Developer-Friendly
    With comprehensive documentation and a user-friendly interface, developers can quickly learn and implement authorization features into their applications.

Possible disadvantages of Warrant

  • Complexity
    For new users or small teams, the extensive features and options available might be overwhelming at first, requiring a learning curve to fully utilize the platform.
  • Cost
    Depending on the size and needs of the organization, using a third-party authorization service like Warrant may introduce additional costs compared to in-house solutions.
  • Dependency
    Relying on an external service for authorization can introduce a dependency that may affect service reliability if there are issues with the third-party provider.
  • Customization Limitations
    While Warrant is flexible, there might be specific customization or specialized requirements that are not fully supported or require workarounds.

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

Warrant videos

Disc Review: Dynamic Discs Warrant

More videos:

  • Review - Dynamic Disc Warrant Review: Air It Out Disc Reviews Ep.24
  • Review - Dynamic Discs Warrant

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 Warrant and ForthWrite)
Developer Tools
100 100%
0% 0
Email
0 0%
100% 100
APIs
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Warrant 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 Warrant and ForthWrite

Warrant Reviews

We have no reviews of Warrant 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, Warrant seems to be more popular. It has been mentiond 22 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.

Warrant mentions (22)

  • Show HN: Permify 1.0 โ€“ Open-source fine-grained authorization service
    I think one major difference between the Zanzibar implementations that are out there is support for the 'zookie' consistency token (as mentioned in the original paper). OpenFGA afaik doesn't implement zookies yet[1]. With zookies, each permission write generates a unique token that represents that particular write. Clients can store that token (per resource) and optionally provide it during runtime checks to... - Source: Hacker News / about 2 years ago
  • A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev
    Warrant โ€” Hosted enterprise-grade authorization and access control service for your apps. The free tier includes 1 million monthly API requests and 1,000 authz rules. - Source: dev.to / over 2 years ago
  • How Open ID Connect Works
    The specific challenge with authz in the app layer is that different apps can have different access models with varying complexity, especially the more granular you get (e.g. Implementing fine grained access to specific objects/resources - like Google Docs). Personally, I think a rebac (relationship/graph based) approach works best for apps because permissions in applications are mostly relational and/or... - Source: Hacker News / over 2 years ago
  • How to Do Authorization - A Decision Framework: Part 1
    Let's use warrant.dev as an example. The system provides a set of REST APIs for you to define object types and access policies (called warrants). The general process is first to create object types using HTTP POST:. - Source: dev.to / over 2 years ago
  • A guide to Auth & Access Control in web apps ๐Ÿ”
    Https://warrant.dev/ (Provider) Relatively new authZ provider, they have a dashboard where you can manage your rules in a central location and then use them from multiple languages via their SDKs, even on the client to perform UI checks. Rules can also be managed programmatically via SDK. - Source: dev.to / almost 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 Warrant and ForthWrite, you can also consider the following products

authzed - The platform to store, compute, and validate app permissions

ReclaimAI - Helps users prioritize their work and personal calendars

Cerbos - Cerbos helps teams separate their authorization process from their core application code, making their authorization system more scalable, more secure and easier to change as the application evolves.

Superhuman - Superhuman is an email management tool.

Aserto - Fine-grained, scalable authorization in minutes

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