Company lists · Data refreshed October 2026

Top 25 SEO api software companies based in Spain

RevenueBase identified 270 company matches for SEO api software companies associated with Spain as of October 2026 and tracks 1,250 professional contacts across them, including 203 with verified work emails. Madrid is the largest hub.

This list covers company matches for SEO api software companies associated with Spain, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 20, 2026 How this list was built
270Companies
1,250Contacts tracked
203Verified emails
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The 25 largest SEO api software companies based in Spain

Ranked by team size
Top 25 of 270 company matches for SEO api software companies based in Spain, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBarcelona, SpainHQ recorded Oct 20, 202651-200104 contacts →

Exact match

“En nuestra agencia SEO en Barcelona somos unos apasionados del posicionamiento web.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
2Exact matchAlhama De Murcia, SpainHQ recorded Oct 20, 202651-20064 contacts →

Exact match

“Since 2012, at Interamplify, we have become strategic partners for brands and companies seeking to expand digitally on a global scale.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
3Exact matchPalencia, SpainHQ recorded Oct 20, 202651-20051 contacts →

Exact match

“We are a technological startup expert in organic search engine optimization (SEO) and comparison engine generation (Software).”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
4Exact matchBarcelona, SpainHQ recorded Oct 20, 202611-5040 contacts →

Exact match

“Keyweo is a digital marketing agency founded in 2018 and based in Barcelona.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
5Exact matchValencia, SpainHQ recorded Oct 20, 202611-5035 contacts →

Exact match

“Esta empresa se creó para dar respuesta a una necesidad cada vez más demandada: el posicionamiento web.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
6Exact matchAlcoy, SpainHQ recorded Oct 20, 202611-5033 contacts →

Exact match

“de páginas web accesibles.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
7Exact matchSant Joan D'alacant, SpainHQ recorded Oct 20, 202611-5033 contacts →

Exact match

“Since 2001, we've been boosting the online discoverability of leading international companies and media outlets.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
8Exact matchMarbella, SpainHQ recorded Oct 20, 202611-5024 contacts →

Exact match

“Posicionamiento Web SEO, Marketing Online y diseño de páginas web en Marbella.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
9Exact matchLas Franquesas Del Vallés, SpainHQ recorded Oct 20, 202611-5017 contacts →

Exact match

“Novaigrup, agencia de ingeniería web y marketing en Internet.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
10Exact matchBarcelona, SpainHQ recorded Oct 20, 202611-5016 contacts →

Exact match

“Seocoaching es una empresa especializada en posicionamiento web con resultados comprobados y servicios SEO garantizados.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
11Exact matchMadrid, SpainHQ recorded Oct 20, 20261-1013 contacts →

Exact match

“Defining who we are is asking what we do.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
12Exact matchQuart De Poblet, SpainHQ recorded Oct 20, 202611-5010 contacts →

Exact match

“Lacomunicación es una agencia de Marketing Digital en Valencia pionera en la consultoría SEO y el marketing digital, servicios que llevamos prestando desde 2004.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
13Exact matchMadrid, SpainHQ recorded Oct 20, 202611-5010 contacts →

Exact match

“SEOLeverage is an International e-commerce SEO agency with over 20 years of SEO experience.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
14Exact matchVilablareix, SpainHQ recorded Oct 20, 20261-109 contacts →

Exact match

“De la mà d’Eva Olivares i Xevi Sañé neix la primera agència 100% SEO a Girona.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
15Exact matchMadrid, SpainHQ recorded Oct 20, 20261-109 contacts →

Exact match

“Linkatomic: La herramienta definitiva para Linkbuilding, Visibilidad y Posicionamiento.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
16Exact matchMadrid, SpainHQ recorded Oct 20, 202611-508 contacts →

Exact match

“Tu Posicionamiento Web: Empresa de Posicionamiento web ubicada en Madrid con una amplia experiencia en Marketing online.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
17Exact matchValencia/valència, SpainHQ recorded Oct 20, 20261-108 contacts →

Exact match

“Si lo que te gusta es el SEO, también le damos caña, toda web que sale de nuestro horno lleva el sello FAST AS A SHARK.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
18Exact matchValencia, SpainHQ recorded Oct 20, 20261-107 contacts →

Exact match

“En helloseosem evolucionamos tu negocio para la nueva era digital.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
19Exact matchBarcelona, SpainHQ recorded Oct 20, 20261-106 contacts →

Exact match

“Trabajar únicamente centrado en el SEO en los últimos 20 años, en todo tipo de proyectos y sectores, me ha permitido adquirir EXPERIENCIA (si, en mayúsculas) y un pensamiento…”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
20Exact matchSant Julià De Vilatorta, SpainHQ recorded Oct 20, 20261-106 contacts →

Exact match

“Agencia SEO NuAnda especializada en estrategias de visibilidad online desde el año nuestra actividad principal es la transformación de los sitios web de nuestros clientes en…”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
21Exact matchMadrid, SpainHQ recorded Oct 20, 20261-105 contacts →

Exact match

“We are an Exclusive SEO Agency with presence in Argentina and Spain, working for the main markets of Latin America and Europe.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
22Exact matchMurcia (murcia, SpainHQ recorded Oct 20, 20261-105 contacts →

Exact match

“Somos tu Agencia SEO en Murcia, te lo decimos alto y claro.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
23Exact matchMadrid, SpainHQ recorded Oct 20, 20261-104 contacts →

Exact match

“Especialistas en Publicidad Online, Programación Web a Medida, Posicionamiento en Buscadores y Diseño Web.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
24Exact matchMarbella, SpainHQ recorded Oct 20, 20261-104 contacts →

Exact match

“SEO y posicionamiento.”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
25Exact matchSant Adrià De Besòs, SpainHQ recorded Oct 20, 20261-103 contacts →

Exact match

“Te inquieta ser invisible para tus clientes?”

Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase

Showing 25 of 270 SEO api software companies based in Spain

See the full list, filter by size, metro and specialty, and access 203 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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SEO api software companies based in Spain at a glance

As of Oct 20, 2026
16.2%Verified-email coverage
4.6Average contacts per company
1-10Median size (employees)
14.8%Largest-city concentration · Madrid
Oct 20, 2026Page data refreshed

Companies by employee count

1-10
229
11-50
34
51-200
5
501-1,000
1

Email recency for this list is measured worldwide rather than for Spain, so it is reported there. Company counts and contact totals on this page are exact for Spain, over 270 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Spain whose business descriptions match “SEO api software companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 203 professional contacts with verified work emails across the full matched dataset. 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 October 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

SEO api software companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “SEO api software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many SEO api software companies are there based in Spain?

RevenueBase identified 270 company matches for SEO api software companies associated with Spain as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Bigseo tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most SEO api software companies?

Madrid leads with 40 company records, followed by Barcelona (36) and Valencia (17).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 203 professional contacts with verified work emails tracked across these 270 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 20, 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 SmartSearch, 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.