Company lists · Data refreshed September 2026

Top 25 IT infrastructure companies based in Portugal

Name: IT infrastructure companies based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 89 companies tracked

RevenueBase identified 89 IT infrastructure companies headquartered in Portugal as of September 2026 and tracks 879 professional contacts across them, including 241 with verified work emails. Lisboa is the largest hub.

This list covers IT infrastructure companies headquartered in Portugal, 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 20, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

89Companies

879Contacts tracked

241Verified emails

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The 25 largest IT infrastructure companies based in Portugal

Ranked by team size

Top 25 of 89 IT infrastructure companies based in Portugal, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to IT infrastructure 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	A2it Technology	Indirect evidence	Almada, PortugalHQ checked Sep 20, 2026	51-200	115 contacts →
	Indirect evidence “Founded in 2006, A2IT Technology is a leading company specialized in Service Desk, Datacenter, Cloud, Cybersecurity, Digital Transformation, Managed Services and AI.” Source: RevenueBase Database · checked Sep 20, 2026
2	Decsis Sistemas DE Informação	Indirect evidence	Porto, PortugalHQ checked Sep 20, 2026	51-200	105 contacts →
	Indirect evidence “A Decsis é uma empresa de tecnologia fundada em 1994 que ajuda empresas a prosperarem com soluções de TI personalizadas e confiáveis.” Source: RevenueBase Database · checked Sep 20, 2026
3	Divultec	Indirect evidence	Porto, PortugalHQ checked Sep 20, 2026	51-200	50 contacts →
	Indirect evidence “A oferta da Divultec é centrada na Integração de Sistemas, oferecendo soluções de backup, comunicações, segurança, infraestruturas de servidores e armazenamento, virtualização…” Source: RevenueBase Database · checked Sep 20, 2026
4	Inspiring Solutions	Indirect evidence	Lisboa, PortugalHQ checked Sep 20, 2026	201-500	46 contacts →
	Indirect evidence “Inspiring Solutions is a company that operates in the Information Technology Integration market, offering its customers a portfolio of innovative solutions and services.” Source: RevenueBase Database · checked Sep 20, 2026
5	Onesource, Consultoria Informática LDA	Partial evidence	Coimbra, PortugalHQ checked Sep 20, 2026	11-50	43 contacts →
	Partial evidence “OneSource is an IT company specialized in the fields of data communications, security, networking and systems management, including the consultancy, auditing, design, development…” Source: RevenueBase Database · checked Sep 20, 2026
6	Compuworks	Partial evidence	Lisboa, PortugalHQ checked Sep 20, 2026	51-200	37 contacts →
	Partial evidence “We work, IT works.” Source: RevenueBase Database · checked Sep 20, 2026
7	Totalstor, A Ricoh Company	Partial evidence	Amadora, PortugalHQ checked Sep 20, 2026	11-50	23 contacts →
	Partial evidence “QUEM SOMOS A TotalStor, a RICOH Company é uma empresa que fornece soluções e serviços de infraestrutura de IT, inovadoras e focadas nas necessidades dos clientes, de modo a…” Source: RevenueBase Database · checked Sep 20, 2026
8	OKWIN	Partial evidence	Amadora, PortugalHQ checked Sep 20, 2026	51-200	22 contacts →
	Partial evidence “Okwin é uma empresa multinacional de IT com presença em Portugal, Angola e Moçambique, especializada em IT Outsourcing, IT Consulting, ITSM & ITOM, Cybersecurity, Data Analytics…” Source: RevenueBase Database · checked Sep 20, 2026
9	Itgest IS	Partial evidence	Almada, PortugalHQ checked Sep 20, 2026	51-200	20 contacts →
	Partial evidence “A ITGest IS é uma empresa especializada em infraestruturas tecnológicas, serviços geridos (IT Managed Services) e cibersegurança, posicionando-se como um parceiro estratégico na…” Source: RevenueBase Database · checked Sep 20, 2026
10	Vantis Software	Indirect evidence	Porto Salvo, PortugalHQ checked Sep 20, 2026	51-200	20 contacts →
	Indirect evidence “Na.” Source: RevenueBase Database · checked Sep 20, 2026
11	Lusorede	Strong evidence	Lisbon, PortugalHQ checked Sep 20, 2026	51-200	16 contacts →
	Strong evidence “Founded in 1995, Lusorede is a leading player in the IT Portuguese industry, providing a diverse range of solutions in datacenters, electrical infrastructure, data cabling, data…” Source: RevenueBase Database · checked Sep 20, 2026
12	Outscope	Partial evidence	Lisbon, PortugalHQ checked Sep 20, 2026	51-200	12 contacts →
	Partial evidence “We run IT!” Source: RevenueBase Database · checked Sep 20, 2026
13	OCR	Indirect evidence	Lisboa, PortugalHQ checked Sep 20, 2026	11-50	11 contacts →
	Indirect evidence “Gerir Melhor A OCR desenvolve e integra aplicações de negócios, assegurando toda a infraestrutura técnica, sistemas e comunicações.” Source: RevenueBase Database · checked Sep 20, 2026
14	Tecnasys Global IT Solutions	Partial evidence	Lisboa, PortugalHQ checked Sep 20, 2026	51-200	10 contacts →
	Partial evidence “At Tecnasys, we connect businesses worldwide with strategic, secure, and sustainable IT solutions.” Source: RevenueBase Database · checked Sep 20, 2026
15	Vida Digital	Strong evidence	Valongo, PortugalHQ checked Sep 20, 2026	1-10	9 contacts →
	Strong evidence “VDSI delivers services and expertise on IT infrastructures.” Source: RevenueBase Database · checked Sep 20, 2026
16	Itpoweron	Partial evidence	Setúbal, PortugalHQ checked Sep 20, 2026	1-10	9 contacts →
	Partial evidence “A IT.POWERON – SISTEMAS DE INFORMAÇÃO, LDA.” Source: RevenueBase Database · checked Sep 20, 2026
17	Black Key, LDA	Indirect evidence	Lisboa, PortugalHQ checked Sep 20, 2026	1-10	6 contacts →
	Indirect evidence “Quem Somos Uma empresa que acredita que consegue prestar o melhor serviço possível mantendo a proximidade com os seus clientes.” Source: RevenueBase Database · checked Sep 20, 2026
18	Milestone II Technology S.A	Indirect evidence	Alfragide, PortugalHQ checked Sep 20, 2026	51-200	6 contacts →
	Indirect evidence “Uma boa e adequada infraestrutura tecnológica é determinante para suportar todas as soluções tecnológicas que os negócios exigem.” Source: RevenueBase Database · checked Sep 20, 2026
19	Data Harbour IT	Partial evidence	Lisbon, PortugalHQ checked Sep 20, 2026	1-10	6 contacts →
	Partial evidence “We are a team of IT-experts that loves to help our clients with smart technology.” Source: RevenueBase Database · checked Sep 20, 2026
20	Active State Informática LDA	Indirect evidence	Baixa Da Banheira, PortugalHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “A ASINFOR é uma empresa de referência com vários anos no mercado da Informática.” Source: RevenueBase Database · checked Sep 20, 2026
21	Combitecnic	Indirect evidence	Loulé, PortugalHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “A oferta da Combitecnic é centrada na Integração de Sistemas, oferecendo soluções que vão desde as infra-estruturas de rede, soluções de impressão, licenciamento de software…” Source: RevenueBase Database · checked Sep 20, 2026
22	Reality Connect	Indirect evidence	Lisboa, PortugalHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “Developing internet based services.” Source: RevenueBase Database · checked Sep 20, 2026
23	Follow	Partial evidence	Charneca Da Caparica, PortugalHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “Founded in 2018, with technicians with more than 20 years of experience in IT, covering areas such as consulting, project management, implementation and support of small, medium…” Source: RevenueBase Database · checked Sep 20, 2026
24	Novasys	Strong evidence	Vila Nova De Gaia, PortugalHQ checked Sep 20, 2026	1-10	3 contacts →
	Strong evidence “NOVASYS is a Portuguese IT infrastructure company specializing in retail technology solutions.” Source: RevenueBase Database · checked Sep 20, 2026
25	Zematek, LDA	Partial evidence	Marinha Grande, PortugalHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “A Zematek - Tecnologias de Informação, Lda é uma empresa especializada em IT Services.” Source: RevenueBase Database · checked Sep 20, 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: IT infrastructure 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 IT infrastructure companies.
Partial evidence: Its own public description names part of IT infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT infrastructure 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 89 IT infrastructure companies based in Portugal

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IT infrastructure companies based in Portugal at a glance

As of Sep 20, 2026

27.4%Verified-email coverage

9.9Average contacts per company

1-10Median size (employees)

16.9%Largest-city concentration · Lisboa

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for Portugal, so it is reported there. Company counts and contact totals on this page are exact for Portugal, over 89 companies.

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 IT infrastructure 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 Portugal whose own description of what they do matches “IT infrastructure 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 IT infrastructure 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 IT infrastructure companies, and records with no verified work email. Companies headquartered outside Portugal 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, 241 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 20, 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 IT infrastructure 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 IT infrastructure companies are there based in Portugal?

RevenueBase identified 89 IT infrastructure companies headquartered in Portugal 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?

A2it Technology, headquartered in Portugal, tops this list with the largest team on record.

Which city has the most IT infrastructure companies?

Lisboa leads with 15 headquartered companies, followed by Lisbon (9) and Porto (7).

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 241 verified decision-maker contacts tracked across these 89 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 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 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.