Company lists · Data refreshed August 2026

Top 25 Cloud infrastructure software companies based in Spain

Name: Cloud infrastructure software companies based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 72 companies tracked

RevenueBase identified 72 cloud infrastructure software companies headquartered in Spain as of August 2026 and tracks 746 professional contacts across them, including 181 with verified work emails and 15 with mobile numbers. Madrid is the largest hub.

This list covers cloud infrastructure software companies headquartered in Spain, 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 August 31, 2026.

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.

How to read this list RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

72Companies

746Contacts tracked

181Verified emails

15Mobile numbers

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The 25 largest cloud infrastructure software companies based in Spain

Ranked by team size

Top 25 of 72 cloud infrastructure software companies based in Spain, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to cloud infrastructure software companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Softwareone Spain	Partial evidence	Barcelona, Spain	201-500	163 contacts →
	Partial evidence “SoftwareOne es un proveedor tecnológico global líder en soluciones Software & MultiCloud que ayuda a las empresas en su proceso de transformación tecnológica, desde la evolución…” Source: RevenueBase Database · checked Aug 31, 2026
2	Keedio	Indirect evidence	Pozuelo De Alarcon, Spain	11-50	54 contacts →
	Indirect evidence “We work to make Big Data solutions affordable to everyone.” Source: RevenueBase Database · checked Aug 31, 2026
3	Opennebula Systems	Partial evidence	Madrid, Spain	51-200	51 contacts →
	Partial evidence “OpenNebula Systems is the open source company behind OpenNebula, supporting its community and providing SLA-based support, consulting, and managed cloud services to corporate…” Source: RevenueBase Database · checked Aug 31, 2026
4	Ackstorm	Partial evidence	Barcelona, Spain	51-200	47 contacts →
	Partial evidence “Ackstorm, con más de 14 años de experiencia en la Gestión e Integración de Sistemas, somos expertos en el Diseño, Implementación y Administración 24x7 de plataformas Cloud para…” Source: RevenueBase Database · checked Aug 31, 2026
5	Intercloud	Strong evidence	Madrid, Spain	51-200	38 contacts →
	Strong evidence “InterCloud is a leading Software-Defined Cloud Interconnect (SDCI) provider that transforms global connectivity, reduces network complexity and accelerates growth and innovation…” Source: RevenueBase Database · checked Aug 31, 2026
6	Communication Square	Indirect evidence	Madrid, Spain	11-50	33 contacts →
	Indirect evidence “Communication Square drives your firm to digital horizons.” Source: RevenueBase Database · checked Aug 31, 2026
7	Cartagon	Partial evidence	Madrid, Spain	11-50	28 contacts →
	Partial evidence “Cartagon is the leading provider of Managed Cloud Services in Spain, specialized in hybrid cloud solutions.” Source: RevenueBase Database · checked Aug 31, 2026
8	Ausum Cloud	Partial evidence	Barcelona, Spain	11-50	27 contacts →
	Partial evidence “En Ausum Cloud, ofrecemos nuestra colaboración con un modelo de acompañamiento de 360 grados.” Source: RevenueBase Database · checked Aug 31, 2026
9	Pentasoft	Partial evidence	Madrid, Spain	11-50	26 contacts →
	Partial evidence “Cloud Thinking Serverless · Microservices · IoT · AWS” Source: RevenueBase Database · checked Aug 31, 2026
10	whitesky.cloud	Partial evidence	Barcelona, Spain	11-50	18 contacts →
	Partial evidence “whitesky is a Belgian company building a scalable cloud stack that also is in an as-a-service model.” Source: RevenueBase Database · checked Aug 31, 2026
11	Onwork - IT & Cloud	Partial evidence	Spain	11-50	15 contacts →
	Partial evidence “Proveedores Especialistas en IT & Cloud para Empresas desde 2003 Con más de 20 años de experiencia, en Onwork transformamos la tecnología de las empresas con soluciones IT y Cloud…” Source: RevenueBase Database · checked Aug 31, 2026
12	Evolve Cloud Services	Partial evidence	Barcelona, Spain	11-50	14 contacts →
	Partial evidence “We help organizations accelerate their cloud transformation journey through strategic assessment, migration, and modernization services designed for today’s rapidly evolving…” Source: RevenueBase Database · checked Aug 31, 2026
13	Resizes	Indirect evidence	Gijon, Spain	11-50	12 contacts →
	Indirect evidence “Resizes is the technology core that orchestrates complete technology stacks: applications, AI agents, APIs, databases, MCPs, and every component a business runs on.” Source: RevenueBase Database · checked Aug 31, 2026
14	Joopbox	Indirect evidence	Palma, Spain	11-50	10 contacts →
	Indirect evidence “JOOPbox, IT Services Company.” Source: RevenueBase Database · checked Aug 31, 2026
15	Bluekiri	Partial evidence	Palma, Spain	51-200	8 contacts →
	Partial evidence “We design, deploy and manage 24/7 the cloud architecture that best suits your business needs.” Source: RevenueBase Database · checked Aug 31, 2026
16	Vortex Cloud	Partial evidence	Madrid, Spain	11-50	8 contacts →
	Partial evidence “We are proud to be a Google Cloud Partner with support in Czechia and other SEMEA countries.” Source: RevenueBase Database · checked Aug 31, 2026
17	Extramile Cloud	Partial evidence	Madrid, Spain	1-10	8 contacts →
	Partial evidence “Como hache2i llevamos siendo partners de Google Cloud desde 2009 y para celebrar que cumplimos diez años hemos decidido comunicar nuestra visión con un nuevo nombre: ExtraMile…” Source: RevenueBase Database · checked Aug 31, 2026
18	ENUVE	Partial evidence	Barcelona, Spain	11-50	6 contacts →
	Partial evidence “enuve ofrece servicios cloud propios y de terceros basados en las tecnologías más avanzadas.” Source: RevenueBase Database · checked Aug 31, 2026
19	Todo EN Cloud	Partial evidence	Madrid, Spain	11-50	6 contacts →
	Partial evidence “Los clientes valoran a Todo en Cloud como uno de los principales actores en el escenario de la Computación en la Nube Estan especializados en Arquitecturas distribuidas con…” Source: RevenueBase Database · checked Aug 31, 2026
20	Smart Platform	Indirect evidence	Pozuelo De Alarcon, Spain	11-50	5 contacts →
	Indirect evidence “Smart Platform está compuesta por un equipo de profesionales, con un alto grado de compromiso en los niveles de servicio ofrecidos a nuestros clientes.” Source: RevenueBase Database · checked Aug 31, 2026
21	Nubecao Sistemas SL	Indirect evidence	Valladolid, Spain	1-10	5 contacts →
	Indirect evidence “Empresa creada en 2015 y ubicada en Valladolid especializada en la administración de sistemas informáticos y electrónica de red.” Source: RevenueBase Database · checked Aug 31, 2026
22	Jackson Cloud	Partial evidence	Las Rozas De Madrid, Spain	1-10	5 contacts →
	Partial evidence “Jackson Cloud es una empresa líder en consultoría y servicios de TI especializada en un viaje exitoso a la nube.” Source: RevenueBase Database · checked Aug 31, 2026
23	Libnamic Hosting	Indirect evidence	Marbella, Spain	1-10	3 contacts →
	Indirect evidence “Servicio de alojamiento online de Libnamic para webs y todo tipo de aplicaciones.” Source: RevenueBase Database · checked Aug 31, 2026
24	Nubosas	Partial evidence	Valencia, Spain	1-10	1 contacts →
	Partial evidence “Public cloud is incredible for finding product-market fit.” Source: RevenueBase Database · checked Aug 31, 2026
25	Quadrabee S.L	Partial evidence	Barcelona, Spain	1-10	1 contacts →
	Partial evidence “Quadrabee provides consultancy, optimisation, migration planning, capacity planning, monitoring and infrastructure management to startups and companies as they migrate to Amazon…” Source: RevenueBase Database · checked Aug 31, 2026

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: cloud infrastructure software companies. 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 cloud infrastructure software companies.
Partial evidence: Its own public description names part of cloud infrastructure software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cloud infrastructure software companies. 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 72 cloud infrastructure software companies based in Spain

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Cloud infrastructure software companies based in Spain at a glance

As of Aug 31, 2026

24.3%Verified-email coverage

2.0%Mobile-number coverage

10.4Average contacts per company

11-50Median size (employees)

31.9%Largest-city concentration · Madrid

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

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 cloud infrastructure software companies, 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.
What qualifies: Companies headquartered in Spain whose own description of what they do matches “cloud infrastructure software companies”. 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 cloud infrastructure software companies), 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 cloud infrastructure software companies, and records with no verified work email. Companies headquartered outside Spain are excluded even when they keep an office there.
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, 181 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 August 31, 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.

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 cloud infrastructure software companies, 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 cloud infrastructure software companies are there based in Spain?

RevenueBase identified 72 cloud infrastructure software companies headquartered in Spain as of August 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?

Softwareone Spain, headquartered in Barcelona, tops this list with the largest team on record.

Which city has the most cloud infrastructure software companies?

Madrid leads with 23 headquartered companies, followed by Barcelona (16) and Palma (2).

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 181 verified decision-maker contacts tracked across these 72 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.