Software Alternatives, Accelerators & Startups

ZenLedger VS ForthWrite

Compare ZenLedger VS ForthWrite and see what are their differences

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ZenLedger logo ZenLedger

Automated IRS tax calculation & forms for crypto investors

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.
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  • ZenLedger Landing page
    Landing page //
    2023-09-20

Track your crypto taxes like a pro. Know what you might pay in advance. Gain peace of mind! ZenLedger enables you to import transactions, calculate gains and income, and see your potential taxes as you go through the year. Gain peace of mind knowing the tax implications of your trades and holdings. Auto-fill IRS forms 8949, Schedule D, FinCen114 & FBAR.


ZenLedger helps cryptocurrency investors in any country with their tax prep and portfolio management. We create a master ledger for you and your CPA.

GET STARTED FOR FREE: https://app.zenledger.io/get_started

  • 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.

ZenLedger

$ Details
freemium $69.0 / Annually ("Hobbyist", "Up to 100 Transactions", "Up to $15K asset value")
Platforms
Browser Web Internet Explorer Google Chrome
Release Date
2017 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

ZenLedger features and specs

  • Comprehensive Integration
    ZenLedger supports a wide range of cryptocurrency exchanges and wallets, allowing users to easily import and track their crypto transactions.
  • User-Friendly Interface
    The platform offers an intuitive interface making it accessible for both novice and experienced users to navigate and manage their crypto taxes efficiently.
  • Tax Report Generation
    ZenLedger automatically generates various tax documents, such as capital gains reports and income statements, which simplify the tax filing process for users.
  • Customer Support
    Users have access to robust customer support, including helpful resources and a responsive team to assist with issues or questions.
  • Data Security
    ZenLedger emphasizes data security, ensuring that user data is encrypted and protected with industry-standard security measures.

Possible disadvantages of ZenLedger

  • Pricing
    ZenLedger's pricing plans can be relatively expensive for users with a high volume of transactions, potentially making it less accessible for small investors.
  • Learning Curve
    Despite its user-friendly design, there can still be a learning curve for users unfamiliar with tax software or cryptocurrency bookkeeping.
  • Feature Limitations
    Some advanced features and detailed reporting tools may be limited to higher-tier plans, possibly restricting access for users on basic plans.
  • Transaction Limit
    Certain pricing plans may restrict the number of transactions that can be processed, which might require users exceeding those limits to pay for a higher-tier plan.
  • Occasional Bugs
    Users have reported occasional bugs and glitches in the software, which can affect the overall experience and functionality of the platform.

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

ZenLedger videos

HOW TO PAY CRYPTO TAXES USING ZENLEDGER

More videos:

  • Review - Crypto Taxes: Easy Cryptocurrency Tax Prep with ZenLedger!
  • Tutorial - How to use ZenLedger.io crypto tax tool

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to ZenLedger and ForthWrite)
Fintech
100 100%
0% 0
Email
0 0%
100% 100
Crypto
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing ZenLedger 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 ZenLedger 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 ZenLedger and ForthWrite

ZenLedger Reviews

Best Cryptocurrency Tax Software: Complete Guide to the Top Options
Many people often vouch for ZenLedger as one of the fastest and friendliest tax tools for cryptocurrency traders, investors, and accountants. The website is well-known for its broad coverage, multiple currency/exchange support, IRS friendly integrations, and multiple payment plans. A unique aspect about ZenLedger is its personalized tax service, as the platform facilitates...
Source: blockonomi.com
14 Best Crypto Tax Software to Ease Your Calculation and Be Compliant
Itโ€™s compatible with HIFO, LIFO & FIFO reporting methods. You can have unlimited exchange platforms with ZenLedger. In addition, it lets you report a variety of crypto income, including DeFi, NFTs, staking, donations, mining, etc.
Source: geekflare.com
15 Best Koinly Alternatives 2022
ZenLedger is a crypto tax tool that can work perfectly in the place of Koinly. ZenLedger saves you the unsettling stress of calculating crypto taxes for thousands of transactions in three simple ways.

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, ZenLedger 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.

ZenLedger mentions (5)

  • If you are mining as a company (LLC in my case) How are you guys/gals paying yourself from your mining profits? I want to just send to my Coinbase and cash some tendies.
    I have an exchange account for both the business and personal. I keep both accounts separate, which is a little annoying. All coins are mined into software wallets that I move weekly to the exchange. (This is to avoid burning up hardware wallets that don't like complex transactions). I also use two zenledger.io accounts (one for each business and personal) to track taxes/mining/sales/etc... Currently selling a... Source: over 4 years ago
  • ZenLedger For Taxes
    Anyone used https://zenledger.io for tax reporting? Started using it yesterday - it was recommended by Bankless. Looks great so far. Source: over 4 years ago
  • Hey guys, question about return %
    You'll need to import your data into something like zenledger.io to see your gains/loses. Or else you'll have to keep track of it with a spreadsheet. Source: over 4 years ago
  • I made a mistake and didnโ€™t realize the seriousness of tax. Any help would be appreciated.
    Look for a service where you can sync your wallets and generate the forms and transaction lists. not sure if these handle your wallet(s) but koinly.io and zenledger.io are a couple of them. Source: almost 5 years ago
  • Crypto tax software recommendation
    We always recommend bitcoin.tax or zenledger.io. However, no software (to my knowledge) will properly report income like staking rewards automatically--you have to mark those transactions as income yourself. They don't always play nice with wallets, either. Source: almost 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 ZenLedger and ForthWrite, you can also consider the following products

Koinly - Koinly is the easiest way to monitor your crypto activity & file your taxes.

ReclaimAI - Helps users prioritize their work and personal calendars

Coinpanda - Calculate & file tax reports for Bitcoin and cryptocurrencies. Made for traders and investors.

Superhuman - Superhuman is an email management tool.

TokenTax - Crypto taxes made easy. TurboTax for cryptocurrency.

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