Software Alternatives, Accelerators & Startups

Sirv VS ForthWrite

Compare Sirv VS ForthWrite and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Sirv logo Sirv

Dynamic image processing, hosting and rich-media for retailers and eCommerce.

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
  • Sirv Landing page
    Landing page //
    2019-11-18

Sirv hosts, processes and optimizes images on-the-fly, empowering you to achieve near-instant page load time. With easy digital asset management across your organization, Sirv is a joy to use. Sirv delivers the fastest 360-degree spin and deep zoom images, a perfect solution for retailers who like to give richer product experiences to their shoppers. Start your free trial at the Sirv website today.

  • 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.

Sirv

Website
sirv.com
$ Details
freemium $19.0 / Monthly (5 GB Storage)
Platforms
Wordpress REST API Web Magento Shopify JavaScript WooCommerce
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

Sirv features and specs

  • Fast Image Delivery
    Sirv uses a global Content Delivery Network (CDN) to ensure that images are delivered quickly to users regardless of their geographic location.
  • Dynamic Imaging
    Sirv provides advanced tools for dynamic image manipulation, including resizing, compression, and format conversion on-the-fly, which can help improve load times and user experience.
  • 360-degree Spins
    Sirv offers specialized features for creating and embedding 360-degree spin images, which can enhance product visuals and interactive experiences for e-commerce sites.
  • Image Optimization
    Automatic image optimization ensures that files are compressed without significant loss in quality, which can save bandwidth and improve page loading speeds.
  • Extensive API
    Sirv offers a robust API that allows developers to integrate its features into custom applications and workflows seamlessly.
  • Responsive Images
    Sirv supports responsive image delivery, allowing different versions of an image to be served based on the user's device, screen size, and resolution.
  • User-Friendly Interface
    The platform provides an intuitive and easy-to-use interface for managing images, making it accessible even for users without advanced technical skills.
  • Excellent Documentation
    Sirv offers comprehensive documentation and support resources, which can help users implement and make the most of its features effectively.

Possible disadvantages of Sirv

  • Cost
    While Sirv offers various pricing tiers, the cost can escalate quickly, particularly for businesses that require a large number of image manipulations or high bandwidth usage.
  • Complex Initial Setup
    For users with complex needs, the initial setup can be challenging and may require considerable configuration to optimize the service to its full potential.
  • Limited Free Plan
    The free plan offered by Sirv has limitations in terms of storage, image manipulations, and bandwidth, which may not be sufficient for larger or growing businesses.
  • Dependency on Internet
    Since Sirv is a cloud-based service, it requires a reliable internet connection. Users may experience issues if their internet connection is poor or unstable.
  • Potential Overhead
    Integrating Sirv into an existing system might add some overhead in terms of time and resources, especially if migration from another image hosting service is required.
  • User Data Privacy
    As with any third-party service, there are concerns about data privacy and security. Businesses need to ensure compliance with data protection regulations when using Sirv.

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 Sirv

Overall verdict

  • Overall, Sirv is considered a reliable and effective solution for managing and delivering optimized images, particularly for businesses looking to enhance their website's speed and performance.

Why this product is good

  • Sirv is a robust image optimization and delivery service that offers features such as real-time image processing, automatic image optimization, and seamless delivery via a global CDN. It supports a wide range of image formats and provides dynamic image transformations, which can help improve website performance and user experience. Sirv also includes advanced caching and integration capabilities, making it suitable for various platforms and use cases.

Recommended for

  • E-commerce websites looking to improve page load times and user experience.
  • Developers seeking an easy-to-integrate image management solution.
  • Businesses that need to handle large volumes of images and want automatic optimization and delivery.
  • Websites requiring advanced caching and transformation capabilities to manage dynamic content.

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

Sirv videos

Sirv Introduction

More videos:

  • Demo - The best 360 product view software - Sirv.

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Sirv and ForthWrite)
Image Optimisation
100 100%
0% 0
Email
0 0%
100% 100
Image Processing
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Sirv 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 Sirv 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 Sirv and ForthWrite

Sirv Reviews

We have no reviews of Sirv yet.
Be the first one to post

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, Sirv seems to be more popular. It has been mentiond 3 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.

Sirv mentions (3)

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 Sirv and ForthWrite, you can also consider the following products

Cloudinary - Cloudinary is a cloud-based service for hosting videos and images designed specifically with the needs of web and mobile developers in mind.

ReclaimAI - Helps users prioritize their work and personal calendars

imgix - Real-time Image Processing. Resize, crop, and process images on the fly, simply by changing their URLs.

Superhuman - Superhuman is an email management tool.

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

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