Software Alternatives, Accelerators & Startups

Plan.io VS ForthWrite

Compare Plan.io VS ForthWrite and see what are their differences

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Plan.io logo Plan.io

Planio makes web based project management and team collaboration more efficient and fun. It is the perfect platform for your projects, team members and clients.

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
  • Plan.io Landing page
    Landing page //
    2022-01-10
  • 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.

Plan.io

Website
plan.io
$ Details
freemium $25.0 / Monthly
Platforms
Web Android iOS Mac OSX Linux Windows
Release Date
2010 January

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

Plan.io features and specs

  • Integrated Project Management
    Offers a comprehensive suite of tools for project management, including issue tracking, Gantt charts, roadmaps, and time tracking, allowing for streamlined project oversight and execution.
  • Git and SVN Repository Integration
    Supports both Git and Subversion (SVN) repository integrations, making it convenient for development teams to manage code and projects in one place.
  • Customization
    Highly customizable with various plugins and settings, allowing users to tailor the platform to their specific needs and workflow requirements.
  • Security
    Robust security features including SSL encryption, regular backups, and role-based access control to protect sensitive project data.
  • Customer Support
    Provides responsive and helpful customer support, ensuring issues and inquiries are addressed promptly.

Possible disadvantages of Plan.io

  • Pricing
    May be relatively expensive for small teams or startups, as the pricing structure can be on the higher side compared to some other project management tools.
  • Learning Curve
    Due to its comprehensive set of features, new users might find it overwhelming at first and may require some time to get accustomed to the platform.
  • Complexity
    While customization is a strength, it can also introduce complexity, making initial setup and configuration time-consuming.
  • Performance
    Can occasionally experience performance issues, especially when handling large projects with significant data.
  • Limited Third-party Integrations
    Although it offers core integrations, the number of available third-party integrations is more limited compared to some competitors.

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 Plan.io

Overall verdict

  • Overall, Plan.io is considered a good choice for businesses and teams that require a flexible, feature-rich project management tool. It is particularly valued for its focus on enhancing team collaboration through a wide range of features that cater to diverse project management needs. However, some users may find the interface slightly overwhelming initially, and the pricing might be higher compared to other simpler project management solutions.

Why this product is good

  • Plan.io is a reputable project management tool known for its comprehensive set of features including issue tracking, Agile methodologies support, Git/SVN repository hosting, time tracking, and custom workflows. It is designed to facilitate team collaboration and improve productivity by offering a centralized platform for managing projects. Users appreciate its robust integrations with other tools, customization options, and the fact that it is based on the popular open-source Redmine software, adding reliability and trust to its offerings.

Recommended for

    Plan.io is highly recommended for small to medium-sized businesses, tech companies, and teams that already have experience with project management tools and need advanced features for complex project management. It is well suited for Agile teams, software developers, and those seeking an all-in-one solution for project planning, tracking, and reporting.

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

Plan.io videos

How 5 Different Businesses Use Planio to Reach Their Goals

More videos:

  • Demo - MovingImage uses Planio as a Digital Hub while Staying Agile
  • Demo - How Tattoosafe Stays Organized and Efficient with Planio
  • Demo - Planio Helps United CMS Track Every Package They Deliver
  • Demo - Planioโ€™s Journey to Serving 1,500 Businesses Worldwide
  • Demo - Planio helps Palupas Set Clear Priorities
  • Demo - How IVU Eliminated Email Chaos with Planio
  • Review - Agile Project Management with Planio

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Plan.io and ForthWrite)
Project Management
100 100%
0% 0
Writing Tools
0 0%
100% 100
Task Management
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Plan.io 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 Plan.io 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 Plan.io and ForthWrite

Plan.io Reviews

10 Best Software For Project Management in 2022
Plan.io is a project tracking and management software. It is based on Redmine, another open source project management software based on Ruby on Rails. Plan.io will also help with version control and file synchronization.
Source: medium.com

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, Plan.io seems to be more popular. It has been mentiond 1 time 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.

Plan.io mentions (1)

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 Plan.io and ForthWrite, you can also consider the following products

Taiga.io - An Agile, Open Source, Free Project Management System

Superhuman - Superhuman is an email management tool.

TargetProcess - Agile Project Management Web Application

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.

Hygger - Hygger - is an Agile project management tool with built-in prioritization.

Lavender - Realtime coaching for sales emails.