Company lists · Data refreshed September 2026

Top 25 Computer system integrators based in Portugal

Name: Computer system integrators based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 183 companies tracked

RevenueBase identified 183 computer system integrators headquartered in Portugal as of September 2026 and tracks 1,494 professional contacts across them, including 563 with verified work emails. Lisboa is the largest hub.

This list covers computer system integrators 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 19, 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 19, 2026 86% judged on-target in blind review

183Companies

1,494Contacts tracked

563Verified emails

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The 25 largest computer system integrators based in Portugal

Ranked by team size

Top 25 of 183 computer system integrators based in Portugal, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to computer system integrators: 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	Decsis Sistemas DE Informação	Indirect evidence	Porto, PortugalHQ checked Sep 19, 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 19, 2026
2	RIS 2048	Partial evidence	Aveiro, PortugalHQ checked Sep 19, 2026	51-200	97 contacts →
	Partial evidence “RIS 2048 is a society constituted in the year to aggregate into a single structure the activity of several information systems companies that operated in Portugal’s Northern…” Source: RevenueBase Database · checked Sep 19, 2026
3	Samsys	Partial evidence	Ermesinde, PortugalHQ checked Sep 19, 2026	51-200	86 contacts →
	Partial evidence “Having a close relationship with our partners, in Samsys we are dedicated to the delivery and implementation of information systems suited to the specific needs of each business.” Source: RevenueBase Database · checked Sep 19, 2026
4	Arentia, S.A	Indirect evidence	Leiria, PortugalHQ checked Sep 19, 2026	51-200	68 contacts →
	Indirect evidence “Na Arentia capacitamos empresas para gerir melhor a sua operação através da tecnologia.” Source: RevenueBase Database · checked Sep 19, 2026
5	Divultec	Indirect evidence	Porto, PortugalHQ checked Sep 19, 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 19, 2026
6	Plexus	Indirect evidence	Vila Nova De Santo André, PortugalHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “A PLEXUS é uma empresa que se especializou no campo da integração de sistemas, que consiste na ligação de vários sistemas autónomos uns aos outros, de forma a que aparentem e se…” Source: RevenueBase Database · checked Sep 19, 2026
7	HES	Indirect evidence	Leiria, PortugalHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “A hes é uma empresa prestadora de serviços e fornecedora de soluções globais na área dos sistemas de informação.” Source: RevenueBase Database · checked Sep 19, 2026
8	Overwan	Partial evidence	Lisboa, PortugalHQ checked Sep 19, 2026	11-50	24 contacts →
	Partial evidence “We are a computer consulting company born in 2011, specialized in maintenance, monitoring and management services of computer resources.” Source: RevenueBase Database · checked Sep 19, 2026
9	Seguinf	Indirect evidence	Águeda, PortugalHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Acreditamos em soluções integradas.” Source: RevenueBase Database · checked Sep 19, 2026
10	Sysconnect	Indirect evidence	Maia, PortugalHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “SYSCONNECT integrates the best and most sophisticated IT and communication technologies in the market, in order to create mechanisms and processes that cross the organizations…” Source: RevenueBase Database · checked Sep 19, 2026
11	Microrégio Soluções Informáticas	Indirect evidence	Vila Do Conde, PortugalHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “Established in 1997, Microrégio is a company specialised in the development, design and implementation of IT solutions.” Source: RevenueBase Database · checked Sep 19, 2026
12	Bmwt Consultoria E Serviços Informáticos	Indirect evidence	Olivais - Lisboa, PortugalHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Somos uma empresa que presta serviços na área de informática e tecnologias de informação bem como consultoria e apoio informático.” Source: RevenueBase Database · checked Sep 19, 2026
13	Createinfor	Indirect evidence	Caldas Da Rainha, PortugalHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Empresa especializada em Consultoria Informática, Redes & Hardware, Soluções de Mobilidade e Software de Gestão.” Source: RevenueBase Database · checked Sep 19, 2026
14	Digitsigma	Indirect evidence	Loulé, PortugalHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “A DS impôs-se desde a sua génese como empresa dedicada á comercialização, implementação, desenvolvimento e suporte especializado às Tecnologias da informação nas empresas.” Source: RevenueBase Database · checked Sep 19, 2026
15	Techfusion Tecnologias E Sistemas DE Informação	Indirect evidence	Escariz, PortugalHQ checked Sep 19, 2026	11-50	12 contacts →
	Indirect evidence “Na Techfusion, ajustamo-nos à realidade específica de cada cliente, centralizando informações e implementando novas funcionalidades, com o objetivo de proporcionar-lhe vantagens…” Source: RevenueBase Database · checked Sep 19, 2026
16	Splendid Evolution	Indirect evidence	Viseu, PortugalHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “A Splendid Evolution é uma empresa da área das Tecnologias de Informação vocacionada para implementação das melhores soluções de software de gestão que acrescentam valor ao seu…” Source: RevenueBase Database · checked Sep 19, 2026
17	Pchouse Portugal	Indirect evidence	Lisbon, PortugalHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “Who we are.” Source: RevenueBase Database · checked Sep 19, 2026
18	Waylogic	Indirect evidence	Lisbon, PortugalHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “WayLogic is a Portuguese IT company specialized in Integration.” Source: RevenueBase Database · checked Sep 19, 2026
19	Trustvision	Indirect evidence	Viseu, PortugalHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “A empresa é reconhecida pela qualidade dos serviços e recursos humanos, assume-se com uma fortíssima vertente de conceção, venda e implementação de soluções integradas, vertente…” Source: RevenueBase Database · checked Sep 19, 2026
20	Topdata	Indirect evidence	Leiria, PortugalHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “A Topdata conta com mais de 15 anos de experiência na implementação de soluções informáticas, sendo, desde 2007, distinguida como parceiro TOP da PHC.” Source: RevenueBase Database · checked Sep 19, 2026
21	Parâmetro Global	Indirect evidence	Freamunde - Paços De Ferreira, PortugalHQ checked Sep 19, 2026	11-50	10 contacts →
	Indirect evidence “A Parâmetro Global é parceira oficial Odoo.” Source: RevenueBase Database · checked Sep 19, 2026
22	Techbase	Indirect evidence	Braga, PortugalHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “A TECHBASE é uma marca pertencente à MENDES L.” Source: RevenueBase Database · checked Sep 19, 2026
23	Streamline	Indirect evidence	Coimbra, PortugalHQ checked Sep 19, 2026	1-10	10 contacts →
	Indirect evidence “IT related.” Source: RevenueBase Database · checked Sep 19, 2026
24	Espectro Sistemas DE Informação SA	Indirect evidence	Coimbra, PortugalHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “Data da fundação: 1993/08/01 Colaboradores: 24 Instalações: Sede em Coimbra e escritório em Lisboa (ver contactos) Facturação em 2010: Certificações: ISO 9001, PME EXCELÊNCIA…” Source: RevenueBase Database · checked Sep 19, 2026
25	H.C.Araújo	Indirect evidence	Vizela, PortugalHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “A HCAraujo, Lda.” Source: RevenueBase Database · checked Sep 19, 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: computer system integrators. 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 computer system integrators.
Partial evidence: Its own public description names part of computer system integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name computer system integrators. 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 183 computer system integrators based in Portugal

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Computer system integrators based in Portugal at a glance

As of Sep 19, 2026

37.7%Verified-email coverage

8.2Average contacts per company

1-10Median size (employees)

8.2%Largest-city concentration · Lisboa

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

120

11-50

51-200

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 183 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 computer system integrators, 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 “computer system integrators”. 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 computer system integrators), 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 computer system integrators, 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, 563 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 19, 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 computer system integrators, 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 computer system integrators are there based in Portugal?

RevenueBase identified 183 computer system integrators 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?

Decsis Sistemas DE Informação, headquartered in Porto, tops this list with the largest team on record.

Which city has the most computer system integrators?

Lisboa leads with 15 headquartered companies, followed by Aveiro (7) and Lisbon (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 563 verified decision-maker contacts tracked across these 183 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 19, 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.