Software Alternatives, Accelerators & Startups

LucidChart VS ForthWrite

Compare LucidChart 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.

LucidChart logo LucidChart

LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.

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
  • LucidChart Landing page
    Landing page //
    2023-05-10
  • 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.

LucidChart

$ Details
-
Platforms
-
Release Date
-
Startup details
Country
United States

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

LucidChart features and specs

  • User-Friendly Interface
    LucidChart features a clean, intuitive interface that makes it easy for users of all skill levels to create diagrams and flowcharts quickly.
  • Collaboration Features
    The platform offers robust collaboration tools, including real-time editing and commenting, which make it easy for teams to work together efficiently.
  • Integration Capabilities
    LucidChart integrates seamlessly with a variety of other tools such as Google Drive, Slack, and Microsoft Office, enhancing its utility within existing workflows.
  • Template Library
    The extensive library of templates and shapes helps users get started quickly and ensures that their diagrams maintain a professional appearance.
  • Cross-Platform Support
    LucidChart is compatible with multiple operating systems and can be accessed via web browsers, enabling users to work from any device.
  • Advanced Features
    Advanced functionalities, such as data linking and automatic formatting, provide powerful tools for creating complex and precise diagrams.

Possible disadvantages of LucidChart

  • Cost
    The subscription plans can be expensive, particularly for small businesses or individual users requiring access to premium features.
  • Learning Curve
    While the interface is user-friendly, mastering all the advanced features and capabilities may take some time and effort.
  • Performance Issues
    Some users report lag or performance issues, especially when working on very large or complex diagrams.
  • Limited Offline Access
    LucidChart is primarily a cloud-based tool, which means that users need a stable internet connection to access their work.
  • Feature Overload for Basic Users
    Some users might find the extensive range of features overwhelming, particularly if they only need to use the tool for basic diagramming tasks.

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 LucidChart

Overall verdict

  • LucidChart is generally considered a good tool for diagramming needs, combining ease of use with powerful features. It suits both individual users and teams, offering versatile functionality that caters to various professional and educational applications.

Why this product is good

  • LucidChart is popular because it offers robust diagramming tools with an easy-to-use interface. It provides a wide range of templates and shapes, enabling users to create flowcharts, wireframes, UML diagrams, and more. The platform supports real-time collaboration, which is beneficial for teams working remotely or from different locations. Additionally, it integrates with other productivity tools like Google Workspace, Microsoft Office, and Slack, enhancing workflow efficiency.

Recommended for

  • Professionals in need of quick and versatile diagramming capabilities.
  • Teams looking for real-time collaborative features to work on diagrams together.
  • Educators and students who require a visual aid for presentations and projects.
  • Businesses that wish to integrate diagramming tools with existing software like Google Workspace or Microsoft Office.

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

LucidChart videos

Lucidchart tutorial for beginners

More videos:

  • Review - Lucidchart in 90 seconds
  • Review - Lucidchart Review

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to LucidChart and ForthWrite)
Diagrams
100 100%
0% 0
Writing Tools
0 0%
100% 100
Flowcharts
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing LucidChart 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 LucidChart 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 LucidChart and ForthWrite

LucidChart Reviews

Best Database Diagram Tools: Paid with Free Trials and Free Alternatives
Data Analysis topicsData Analysis topicsData Analysis topicsData Analysis topics7 free database diagramming tools for busy data folks1. Diagrams.netHow it worksWhy it's free2. dbdiagramHow it worksWhy it's free3. ERD PlusHow it worksWhy it's free4. LucidchartHow it worksWhy it's free5. QuickDBDHow it worksWhy it's free6. MySQL Workbench Community EditionHow it worksWhy it's...
Best Database Diagram Tools โ€“ Free and Paid
If youโ€™re prototyping, teaching, or diagramming casually, free data modeling software like ERD Plus, QuickDBD (free tier), or Creately (free plan) may cover your needs. But for production systems, audits, or CI/CD workflows, paid tools like dbForge, SqlDBM, or Lucidchart offer advanced features, support, and scalability that free versions canโ€™t match.
Source: blog.devart.com
8 Best Database Design Tools in 2025
Lucidchart is another cloud-based tool tailored for creating detailed database diagrams online. As a web-based application, it offers accessibility from anywhere and also provides dedicated apps for Android and iOS. The toolโ€™s extensive functionality, including various automation features and AI support, combined with exceptional real-time teamwork capabilities, positions...
Source: www.devart.com
Top 9 Data Modeling Tools Every Team Needs
Lucidchart is a more general-purpose diagramming tool that supports database diagrams and offers collaborative, real-time editing. Lucidchart allows users to design databases, collaborate on diagrams in real-time, and optimize the database design process with its flexible set of features. Popular database management systems, including MySQL, Oracle, SQL Server, and...
Source: www.devart.com
Top 5 Zeplin Alternative
Lucidchart is another professional application that helps designers create and share flowchart diagrams. This allows the project management teams to brainstorm on the designs and give valuable additions. This tool is suitable for anyone in any given industry playing any role due to its prowess and ease of use in creating professional flowcharts. These charts are good for...

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, LucidChart seems to be more popular. It has been mentiond 5 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.

LucidChart mentions (5)

  • Architecture Diagraming Tools
    I'm thinking something like a lucidchart.com set up, but also wondering since one project is complete if there is anything that can just analyze an existing codebase and automatically do the work for me. Source: over 4 years ago
  • Anyone use the "/diagram" function in Roam?
    Oh! excalidraw.com is great for quick paper style diagrams. I have used it a fair bit. The roam integration is good. But I always revert back to draw.io because it's open sourced, simple to use and just works :D If you are looking for more, a paid option would be lucidchart.com. Source: over 4 years ago
  • ProCurve Network Admin
    You could try lucidchart.com or draw.io. I have used both. Source: over 5 years ago
  • Interactive Relationship Chart
    Otherwise, you may be thinking about a "mind-map" of sorts... Simply to show relationships? Diagrams.net, lucidchart.com. Source: over 5 years ago
  • Looking for feedback on a design system tool
    What is difference between Yours tool and others like arcentry.com lucidchart.com cloudcraft.co hava.io ? Would be nice to support diagrams as code ( generated from kubernetes states, terraform, pulumi, etc..) Personally I dont think that another diagram tool can beat ^ platforms. Source: over 5 years ago

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 LucidChart and ForthWrite, you can also consider the following products

draw.io - Online diagramming application

Superhuman - Superhuman is an email management tool.

OmniGraffle - OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.

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.

yEd - yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.

Lavender - Realtime coaching for sales emails.