Company lists · Data refreshed September 2026
Top 25 Author platforms worldwide
RevenueBase identified 896 author platforms worldwide as of September 2026 and tracks 9,623 professional contacts across them, including 1,053 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers author platforms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026. Country and city lists for author platforms follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest author platforms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 584 contacts → | ||||
Partial evidence “Share Stories, Spread Ideas, Change the World Notion Press is a global platform for anyone who believes in the power of words and the impact it can have on the world we live in.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 504 contacts → | ||||
Partial evidence “AuthorHouse, an Author Solutions brand, is the leading provider of self-publishing and marketing services for authors around the globe.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 477 contacts → | ||||
Partial evidence “Xlibris Publishing was founded in 1997 and, as the leading publishing services provider for authors, has helped to publish and market more than titles.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 451 contacts → | ||||
Partial evidence “Run by a pair of metaphor-loving, simile-craving, typo-hating literary enthusiasts, Amazon Kindle Direct Publisher is the place where authors come to terraform their ideas into…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 436 contacts → | ||||
Partial evidence “Author Solutions is a global company, headquartered in beautiful Bloomington, Indiana, with customers on all seven continents.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 333 contacts → | ||||
Partial evidence “CreateSpace, an Amazon company, is the leading provider of independent publishing tools that enable authors, filmmakers and musicians to produce, polish, publish and distribute…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 307 contacts → | ||||
Partial evidence “Reedsy is a community of over 5 million authors and publishing professionals.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 222 contacts → | ||||
Partial evidence “Podium is a digital-first publisher committed to discovering, developing, and amplifying the works of emerging and bestselling authors.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 203 contacts → | ||||
Indirect evidence “Dorrance Publishing has been pioneering publishing services for over 100 years.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 159 contacts → | ||||
Indirect evidence “We are an experienced and affordable Delhi based self-publishing company, with a huge network across the nation in major cities like Mumbai, Chennai, Kolkata, Bangalore, Patna…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 150 contacts → | ||||
Indirect evidence “Never Write Alone.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 149 contacts → | ||||
Indirect evidence “Spines: Revolutionizing Publishing with AI At Spines, we're redefining the publishing journey, Our mission?” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 145 contacts → | ||||
Indirect evidence “Xulon Press is the largest, most experienced Christian owned and operated print-on-demand self publisher of Christian books.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 143 contacts → | ||||
Indirect evidence “A Viseu é um grupo editorial que surgiu com um sonho: a ideia de ajudar autores a realizarem seus sonhos.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 130 contacts → | ||||
Partial evidence “Outskirts Press helps authors develop and publish high-quality books by offering exceptional design, printing, publishing, distribution, and book marketing services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 118 contacts → | ||||
Indirect evidence “At YourBookTeam, we partner with visionaries and founders to transform ideas into timeless books.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 110 contacts → | ||||
Partial evidence “Greenleaf Book Group is a publisher and distributor that specializes in the development of independent authors and the growth of small presses.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 103 contacts → | ||||
Partial evidence “We provide a simple process to turn authors’ documents into professionally-formatted ebooks and release them through all the industry's most powerful sales channels.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 97 contacts → | ||||
Indirect evidence “At Publishing.com, we’re revolutionizing how people turn their ideas into income by making self-publishing books easy and accessible to anyone, regardless of their background or…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 97 contacts → | ||||
Partial evidence “In March 2022, Smashwords merged with Draft2Digital, creating the industry's leading publishing services firm serving over authors and publishing and distributing over 1 million…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 93 contacts → | ||||
Indirect evidence “BookBaby is your full-service printing and publishing partner.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 92 contacts → | ||||
Indirect evidence “O Clube de Autores é a plataforma de publicação de livros e serviços de AI pioneira no mercado, com distribuição de impressos e digitais em milhares de marketplaces e livrarias em…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 90 contacts → | ||||
Indirect evidence “1995 marked a publishing industry revolution.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 80 contacts → | ||||
Partial evidence “Advantage | The Authority Company is the publishing home of Forbes Books, SXSW Books, Entrepreneur Books, Advantage Books, and now - Rethink Books.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 77 contacts → | ||||
Indirect evidence “We’re book lovers who are here to help you with every aspect of publishing your work.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: author platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names author platforms.
- Partial evidence
- Its own public description names part of author platforms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name author platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 896 author platforms worldwide
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Author platforms worldwide at a glance
As of Sep 14, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among author platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- 5 countries, largest first: the United States, India, the United Kingdom, Brazil, Australia. Country and city lists for author platforms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “author platforms”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names author platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among author platforms, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 1,053 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 14, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Author platforms by location
6 lists · largest firstEvery Author platforms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Author platforms based in the United States532
- Author platforms based in India165
- Author platforms based in the United Kingdom95
- Author platforms based in Brazil55
- Author platforms based in Australia49
Cities
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names author platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many author platforms are there worldwide?
RevenueBase identified 896 author platforms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Notion Press, headquartered in Egmore Chennai, tops this list with the largest team on record.
Which country has the most author platforms?
The United States leads with 532 companies, followed by India (165) and the United Kingdom (95). Every author platforms list by country and city is linked on this page.
Which city has the most author platforms?
London leads with 33 headquartered companies, followed by New York (30) and New Delhi (21).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,053 verified decision-maker contacts tracked across these 896 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.