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Four13Publishing alternatives & similar sites

#1 Bestselling Book Publisher for Speakers, Executives & Leaders | Four 13 Publishing — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Publishing Industry →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
sciencepg.com ↗	65 match shared topic	Science Publishing Group: an International Academic Publisher	en	publishing-industry	robotsllmsaihumans	emailphone	none
yudu.com ↗	65 match shared topic	Digital Publishing Software Platform \| YUDU Publisher	en	publishing-industry HubSpot	robotsllmsaihumans	emailphone	none
notionpress.com ↗	65 match shared topic	Self-publishing in India \| Book Publishers \| Online Publishing	en	publishing-industry	robotsllmsaihumans	email phone	full · 16
epublishing.com ↗	65 match shared topic	AI Revenue Engine for Publishers \| ePublishing	en	publishing-industry WordPress	robots llmsaihumans	emailphone	none
independentpublisher.com ↗	65 match shared topic	Independent Publisher: THE Voice of the Independent Publishing Industry	en	publishing-industry	robotsllmsaihumans	emailphone	none
ecwpress.com ↗	65 match shared topic	ECW Press \| A Canadian Indie Book Publisher \| Publishing Curiously Compelling Books Since 1974	en	publishing-industry Shopify	robotsllmsaihumans	emailphone	none
suburbanbuzz.com ↗	65 match shared topic	SuburbanBuzz Publishing – Boutique Publisher for Independent Authors	en	publishing-industry WordPress	robotsllmsaihumans	emailphone	none
oaepublish.com ↗	65 match shared topic	OAE Publishing Inc. - Gold Open Access Journal Publisher	en	publishing-industry	robotsllmsaihumans	emailphone	none
publica.la ↗	65 match shared topic	Publica.la — Digital Publishing & Ecommerce Platform for Publishers	en	publishing-industry	robots llmsaihumans	emailphone	full · 9
sciencepublishinggroup.com ↗	65 match shared topic	Science Publishing Group: an International Academic Publisher	en	publishing-industry	robotsllmsaihumans	emailphone	none
instantpublisher.com ↗	65 match shared topic	InstantPublisher: Affordable Self-Publishing & Book Printing Services - Instantpublisher.com	en	publishing-industry	robotsllmsaihumans	emailphone	none
ipublisher.app ↗	65 match shared topic	iPublisher - Digital Publishing Platform for Interactive Content Creation	UK~ en	publishing-industry	robotsllmsaihumans	emailphone	none
issuu.com ↗	60 match shared topic	Issuu \| Create Interactive Flipbooks on our Digital Publishing Platform	en	publishing-industry	robotsllmsaihumans	emailphone	none
grandbrands.com ↗	60 match shared topic	GrandBrands.com — Global Media Publishing Company	en	publishing-industry	robotsllmsaihumans	emailphone	none
calameo.com ↗	60 match shared topic	Calaméo - Publishing Platform for Documents and Magazines	en	publishing-industry	robotsllmsaihumans	emailphone	none
lulu.com ↗	60 match shared topic	Global Book Printing, Publishing, and Technology Company \| Lulu	en	publishing-industry WooCommerce	robotsllmsaihumans	emailphone	none
sagepub.com ↗	60 match shared topic	Sage - a global academic publisher of educational resources \| Home	United States~ en	publishing-industry	robotsllmsaihumans	emailphone	none
frontiersin.org ↗	60 match shared topic	Frontiers \| Publisher of peer-reviewed articles in open access journals	en	publishing-industry	robots llmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.