Software Alternatives, Accelerators & Startups

spaCy VS ForthWrite

Compare spaCy VS ForthWrite and see what are their differences

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spaCy logo spaCy

spaCy is a library for advanced natural language processing in Python and Cython.

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.
  • spaCy Landing page
    Landing page //
    2023-06-26
  • 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.

spaCy

Website
spacy.io
Pricing URL
-
$ Details
Platforms
-
Release Date
-

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

spaCy features and specs

  • Efficient and Fast
    spaCy is designed to be highly efficient and fast, making it suitable for processing large amounts of text quickly.
  • Easy to Use API
    The library offers a user-friendly API, which makes it accessible for beginners while still being powerful for advanced users.
  • Pre-trained Models
    spaCy provides a range of pre-trained models for various languages, which facilitates quick development and testing.
  • High-Quality Documentation
    The documentation is thorough and well-structured, providing essential guides and examples to help users get started.
  • Community and Ecosystem
    A strong community and a wide array of third-party extensions and integrations are available, enhancing the library's functionality.
  • Named Entity Recognition (NER)
    spaCy offers robust Named Entity Recognition capabilities out of the box, allowing for efficient entity extraction.
  • Tokenization
    It provides efficient sentence and word tokenization, which is fundamental for any NLP task.
  • Dependency Parsing
    spaCy includes a powerful dependency parser for analyzing grammatical structure.

Possible disadvantages of spaCy

  • Limited Language Support
    While spaCy supports multiple languages, it does not support as many languages as some other NLP libraries like NLTK.
  • Memory Usage
    spaCy can be memory-intensive, particularly when dealing with large models or datasets.
  • Customization Constraints
    Customizing certain aspects of the models can be complex and might require deep knowledge of the library's internals.
  • Installation Issues
    Some users may encounter difficulties when installing spaCy due to dependency management, particularly in specific environments.
  • Lack of Text Generation Features
    Unlike libraries such as GPT-3 provided by OpenAI, spaCy does not focus on text generation capabilities, limiting its use for certain applications.
  • Relatively New
    Compared to more established libraries like NLTK, spaCy is relatively new, which means it has less historical development and a smaller knowledge base in some areas.

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 spaCy

Overall verdict

  • spaCy is a highly regarded NLP library, especially valued for its speed and practicality in production environments. It is particularly recommended for projects that require efficient processing of large volumes of text.

Why this product is good

  • Updates
    Regular updates and extensions provide new features and improved performance.
  • Features
    ["spaCy is known for its speed and efficiency in natural language processing tasks.", "It offers easy-to-use APIs and comprehensive pre-trained models for multiple languages.", "The library is designed to help users build production-ready NLP pipelines quickly.", "spaCy provides excellent integration with other machine learning frameworks such as TensorFlow and PyTorch.", "It includes robust support for named entity recognition, part-of-speech tagging, dependency parsing, and more."]
  • Community
    spaCy has an active community and an abundance of tutorials, documentation, and resources to support users.

Recommended for

  • Developers and data scientists working on natural language processing projects.
  • Teams needing fast and reliable NLP pipelines in production systems.
  • Individuals or organizations looking to quickly prototype NLP applications.

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

spaCy videos

Honda Spacy Helm in PGM-FI Review & Test Ride

More videos:

  • Review - Review Singkat Honda Spacy
  • Review - REVIEW HONDA SPACY 2018/2019

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to spaCy and ForthWrite)
Natural Language Processing
Email
0 0%
100% 100
NLP And Text Analytics
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing spaCy 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 spaCy and ForthWrite

spaCy Reviews

We have no reviews of spaCy 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, spaCy seems to be more popular. It has been mentiond 65 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.

spaCy mentions (65)

  • The Sovereign Redactor โ€” A Precision-Guided Privacy Airlock
    We use spaCyโ€™s en_core_web_lg (Large) model as the underlying NLP engine. This gives the Redactor the linguistic context to understand that "Gatsby" in a book title should stay, but "Gatsby" mentioned as a person's name in a private letter might need to go. - Source: dev.to / 4 months ago
  • NER: Gemini vs Spacy vs Compromise
    For NER, if accuracy is critical, go with an LLM โ€” even an old one like gemma-3-27b-it will outperform tools or small models trained for this task. But by using an LLM you are exposing your data, making an HTTP request, and most likely incurring a cost. If accuracy is not critical and you want to stay in Javascript, compromise is a good package for NER. If you want an even better package and it's OK not using... - Source: dev.to / 5 months ago
  • Parsing Nutrition Labels with AI: From Image to Structured Data
    For more advanced food label AI, combine pattern matching with Named Entity Recognition (NER). Libraries like spaCy (Python) or compromise (JavaScript) can identify amounts, units, and nutrient names even in noisy text. - Source: dev.to / 6 months ago
  • Building a Menu Scanner with OCR and AI
    For complex or highly variable menus, consider using NLP libraries like spaCy (Python) or fine-tuning a transformer-based NER model (e.g., BERT) to identify dish names and prices. - Source: dev.to / 6 months ago
  • Solved: Is there a better way to test subject lines besides random A/B tools?
    Open-Source NLP Libraries: Python libraries like spaCy, NLTK, and Hugging Face Transformers for building custom models. - Source: dev.to / 8 months 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 spaCy and ForthWrite, you can also consider the following products

Amazon Comprehend - Discover insights and relationships in text

ReclaimAI - Helps users prioritize their work and personal calendars

Google Cloud Natural Language API - Natural language API using Google machine learning

Superhuman - Superhuman is an email management tool.

FuzzyWuzzy - FuzzyWuzzy is a Fuzzy String Matching in Python that uses Levenshtein Distance to calculate the differences between sequences.

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