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Writebook

Our listed site, writebook.io, doesn't exist. The best-known Writebook is 37signals' free, self-hosted book publishing app.

Our take: We can't review a product at writebook.io because the domain doesn't resolve and has never been archived.

Best forNot available (site missing)
ReviewedPricing: Offline
6.1 out of 105 criteria · see breakdown
Not available (site missing)

We listed 'writebook' with a link to writebook.io, but as of 3 October 2026 that domain doesn't exist in DNS and the Internet Archive has no copy of it, so we can't confirm that a product ever ran there. If you're looking for Writebook, the best-known product with that name is 37signals' free, self-hosted app for publishing books on the web, at once.com/writebook.

Status: writebook.io not found (checked 3 October 2026)

writebook.io and www.writebook.io return no DNS records (Google DNS reports a non-existent domain), so the site can't load. The Internet Archive has no snapshots of the domain.

We found no evidence tying writebook.io to 37signals' Writebook, which is distributed from once.com. We have removed our link until we can confirm which product this listing should describe.

Checked October 3, 2026
The bottom line

writebook.io can't be reached; for free online book publishing, look at 37signals' Writebook at once.com/writebook.

Our score

Reviewed by the Conversion Gems editorial team. Hover a facet to focus it; click to pin.Tap a facet to focus it.

What it is, and why we rate it

One line each. Open a row for detail.

What it really isA listing whose linked site, writebook.io, doesn't exist; not to be confused with 37signals' free Writebook app.
Our takeWe can't review a product at writebook.io because the domain doesn't resolve and has never been archived.
The Writebook most people search for is 37signals' free software for publishing books on the web, which you install on your own server. It is a publishing tool, not an AI writing or book-planning assistant.
Why we rate itWe no longer rate this listing as a working product: its site can't be found.
The scores below are from our earlier review.
The catchThe listed domain doesn't exist, so there is nothing to sign up for at writebook.io.

Best / not good for

Best for
  • No current use: the listed site doesn't exist
Not good for
  • Non-technical users who can't manage a VPS
  • Authors needing PDF, ePUB, or Kindle export
  • Teams needing analytics, paywalls, or deep third-party integrations
Trade-offs

Friction report

Trade-offs to know before signing up.

  1. Time to value
    Not available: the listed site doesn't exist.
  2. Scale breakpoint
    Server resources: a single low-cost VPS handles small to medium traffic, but heavy public traffic requires manual scaling.
  3. Walled garden
    Low: you own the server and the full source code; no lock-in beyond the Rails stack.

What we checked

CheckResult (3 October 2026)
writebook.io DNSNon-existent domain on Google DNS; no address on Cloudflare DNS
www.writebook.io DNSNo address record
Internet ArchiveNo snapshots of writebook.io
37signals WritebookLive at once.com/writebook, version 1.2.2 (3 August 2026)

If you meant 37signals' Writebook

Facts from 37signals' Writebook page, checked 3 October 2026:

  • Free: Writebook is free. You host it yourself, and you also get the Rails source code.
  • Self-hosted: You need your own domain and a server with 2 GB RAM and 1 CPU. It installs with one command through the ONCE CLI and runs as a Docker image.
  • What it does: Publishes text and pictures as browsable online books, with co-authors, private or public books and as many books as you like per install.
  • Limits: No Kindle, PDF or ePUB export, no native mobile apps, and no formal import or export beyond copying Markdown.

Frequently Asked Questions

Is writebook.io down?

writebook.io doesn't load because the domain has no DNS records, and the Internet Archive has no copy of it, so we can't confirm a product ever ran there (checked 3 October 2026).

Is Writebook free?

37signals' Writebook is free. You run it on your own server, so you pay for hosting and a domain, and it comes with its Rails source code.

Can Writebook export to PDF or Kindle?

37signals says Writebook can't currently export Kindle, PDF or ePUB files. It publishes web-based books only.

Where can I get Writebook?

37signals' Writebook is at once.com/writebook, and its source code is on GitHub at github.com/basecamp/writebook.

Writebook alternatives

Other writing and publishing tools in our reviews:

Showing 1–3 of 3
Sources checked October 3, 2026: 37signals Writebook, Writebook changelog, Writebook source code.

Conversion Gems independently reviews every tool.

Tags

#Writing#Storytelling

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