Software Alternatives, Accelerators & Startups

Syncthing VS ForthWrite

Compare Syncthing 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.

Syncthing logo Syncthing

Syncthing replaces proprietary sync and cloud services with something open, trustworthy and...

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
  • Syncthing Landing page
    Landing page //
    2022-04-18
  • 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.

Syncthing

Pricing URL
-
$ Details
Platforms
-
Release Date
-
Startup details
Country
Germany

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

Syncthing features and specs

  • Open Source
    Syncthing is open-source software, making it free to use and allowing for community contributions. This fosters transparency and continuous improvement.
  • Privacy
    The software uses peer-to-peer communication, meaning your files are not stored on a third-party server, enhancing privacy and security.
  • Cross Platform
    Syncthing is available on multiple platforms, including Windows, Mac, Linux, and Android, ensuring broad compatibility.
  • Real-time Sync
    The software offers real-time synchronization, which ensures that changes are immediately propagated across all devices, minimizing data inconsistencies.
  • Version Control
    Syncthing provides file versioning features, which can help recover older versions of files in case of accidental deletion or changes.

Possible disadvantages of Syncthing

  • Complex Setup
    Initial configuration and setup might be complex for users who are not technically inclined, requiring a certain level of understanding of network concepts.
  • Resource Usage
    Real-time syncing and continuous operation can consume significant system resources, affecting performance, especially on less powerful devices.
  • No Native Mobile Experience
    While Syncthing is available on Android, there is no official iOS app, which limits its usability for users on Apple's mobile platform.
  • Network Dependency
    Effective synchronization depends on the availability of a reliable network connection, which can be a limitation in areas with poor connectivity.
  • Self-Management
    Unlike cloud-based solutions, Syncthing requires users to handle their own backups, security, and maintenance, which can be time-consuming and complex.

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

Syncthing videos

Why We Use Syncthing, The Open Source Private File Syncing Tool instead of NextCloud

More videos:

  • Review - Setup and Review of SyncThing, The Open Source File synchronization tool
  • Review - Syncthing for Syncing Both Computers & Phones

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Syncthing and ForthWrite)
Cloud Storage
100 100%
0% 0
Writing Tools
0 0%
100% 100
File Sharing
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Syncthing 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 Syncthing 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 Syncthing and ForthWrite

Syncthing Reviews

15 Best Rclone Alternatives 2022
With this tool, you can synchronize files between multiple computers without hassles. Syncthing is not very different from rclone as it also supports command-line functionality. Also, itโ€™s a free and open source application with all source code available on GitHub.

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, Syncthing seems to be more popular. It has been mentiond 850 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.

Syncthing mentions (850)

  • The Quiet Renovation at Bitwarden
    Been using this setup for many years and never had any problem at all. I sync between desktop and mobile with Syncthing[0]. And also you can configure Syncthing to do file versioning, and it has many options (Trash Can, Simple, Staggered or External file versioning) so if some weird conflict happens you'll never lose data. But honestly, I have never had any issues, and I have been running this setup for many... - Source: Hacker News / about 2 months ago
  • Show HN: Stop paying for Dropbox/Google Drive, use your own S3 bucket instead
    Https://syncthing.net/ <- like this :) Free, opensource, works on computers and phones, can in most cases puncture nat, supports local discovery (lan, multicast). No googles, no dropboxes, no clouds, no AI training, no "my kid likes the wrong video on youtube, now our whole family lost access to every google account we had, so we lost everything, including family photos", just sync! (not affiliated, just really... - Source: Hacker News / 3 months ago
  • Seafile vs Syncthing: Server vs Peer-to-Peer
    Syncthing is a decentralized, peer-to-peer file sync tool. Devices connect directly to each other โ€” no central server. It does one thing: keep folders in sync across devices. It does this exceptionally well, with block-level delta sync and strong encryption. - Source: dev.to / 4 months ago
  • iCloud Photos Downloader
    This will let you download all of your photos that already exist on iCloud Photos. Going forward, youโ€™d want to set up some other way to sync photos you take from your phone to your other devices. I can personally recommend Synology Photos for simplicity[1], or Immich[2] for an open-source (and in my opinion, slightly better) alternative you can run on any hardware, if youโ€™d like to set up an always-on NAS. These... - Source: Hacker News / 6 months ago
  • Bye Bye Big Tech: How I Migrated to an Almost All-EU Stack (and Saved 500โ‚ฌ/Year)
    This year I moved off LastPass, and started using [Syncthing](https://syncthing.net/) to sync my [KeepassXC](https://keepassxc.org/). It works pretty well, but doesn't have any automatic conflict resolution (I've been working on [something](https://github.com/LightAndLight/syncthing-merge) for this). Next up I'm moving my TODOs off Todoist to something local-first, and plugging that into my Syncthing setup. - Source: Hacker News / 6 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 Syncthing and ForthWrite, you can also consider the following products

Nextcloud - With Nextcloud enterprises host their own secure cloud solution for storage, collaboration & communication from any device, anywhere.

Superhuman - Superhuman is an email management tool.

Dropbox - Online Sync and File Sharing

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.

FreeFileSync - FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.

Lavender - Realtime coaching for sales emails.