Company lists · Data refreshed September 2026

Top 23 Systems software contractors based in Portugal

RevenueBase identified 296 company matches for systems software contractors associated with Portugal as of September 2026 and tracks 3,804 professional contacts across them, including 1,227 with verified work emails and 174 with mobile numbers. Lisbon is the largest hub.

This list covers company matches for systems software contractors associated with Portugal, 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 September 6, 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 Sep 6, 2026 How this list was built
296Companies
3,804Contacts tracked
1,227Verified emails
174Mobile numbers
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The 23 largest systems software contractors based in Portugal

Ranked by team size
Top 23 of 296 company matches for systems software contractors based in Portugal, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 6, 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 matchAlfragide, PortugalHQ recorded Sep 6, 2026201-500138 contacts →

Exact match

“Syone is Portugal's leading open source provider.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
2Exact matchLisbon, PortugalHQ recorded Sep 6, 202651-200127 contacts →

Exact match

“Premium Minds is a software house specializing in backend engineering, custom solutions, and AI innovation, with satisfied and demanding customers in Portugal, Spain, Switzerland…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
3Exact matchPorto Salvo, PortugalHQ recorded Sep 6, 202651-200111 contacts →

Exact match

“A Digibéria ajuda organizações a transformar tecnologia em resultados de negócio.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
4Exact matchPorto, PortugalHQ recorded Sep 6, 202651-200105 contacts →

Exact match

“A Decsis é uma empresa de tecnologia fundada em 1994 que ajuda empresas a prosperarem com soluções de TI personalizadas e confiáveis.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
5Exact matchPorto, PortugalHQ recorded Sep 6, 2026201-500101 contacts →

Exact match

“MOZANTECH, a proudly Portuguese company, engages in national and international projects from its headquarters in Oporto, Lisbon, and São Paulo.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
6Exact matchLisbon, PortugalHQ recorded Sep 6, 202651-200101 contacts →

Exact match

“At ProCoders, we are experts in guiding our clients through the entire project lifecycle, transforming initial ideas into fully realized software solutions.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
7Exact matchPorto, PortugalHQ recorded Sep 6, 202611-5091 contacts →

Exact match

“A ANO - Sistemas de Informática e Serviços, Lda.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
8Exact matchErmesinde, PortugalHQ recorded Sep 6, 202651-20086 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
9Exact matchPorto, PortugalHQ recorded Sep 6, 202651-20081 contacts →

Exact match

“Optimizer is an IT service and information systems company focused on providing complementary services in the information technology sector.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
10Exact matchLisbon, PortugalHQ recorded Sep 6, 202651-20079 contacts →

Exact match

“Somos o equilíbrio entre a evolução tecnológica e o que esta pode fazer na vida de quem nos rodeia.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
11Exact matchLisbon, PortugalHQ recorded Sep 6, 202651-20075 contacts →

Exact match

“We are specialists in software development, with more than 19+ years of extensive IT expertise.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
12Exact matchLisbon, PortugalHQ recorded Sep 6, 2026n/a72 contacts →

Exact match

“A IT Consulting é uma empresa que constrói soluções eficientes nas áreas das tecnologias de informação contribuindo para o desenvolvimento e continuidade do seu negócio.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
13Exact matchLisbon, PortugalHQ recorded Sep 6, 202651-20063 contacts →

Exact match

“AdvanceWorks is a technology services company specialized in creating unique software solutions based in state-of-the art development technologies and practices, which enable…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
14Exact matchVila Nova De Gaia, PortugalHQ recorded Sep 6, 202651-20055 contacts →

Exact match

“Ciberbit has been a hub of original thinking and challenging projects in the software development realm for over 20 years and we’re not stopping anytime soon.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
15Exact matchSanto-tirso, PortugalHQ recorded Sep 6, 202611-5045 contacts →

Exact match

“Redicom was founded in 2002 with a vision to provide customers with highly effective web applications.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
16Exact matchLeiria, PortugalHQ recorded Sep 6, 202651-20044 contacts →

Exact match

“Com 40 anos de existência e mais de clientes ativos, somos uma das mais antigas softwarehouses portuguesas, com uma forte aposta no apoio direto ao cliente e um serviço de…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
17Exact matchLisbon, PortugalHQ recorded Sep 6, 202651-20042 contacts →

Exact match

“Our mission is to innovate and excel in the creation and development of solutions and services, adopting emerging Java and web technologies that boost business’ grow…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
18Exact matchCoimbra, PortugalHQ recorded Sep 6, 202611-5038 contacts →

Exact match

“We love solving deep technical problems.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
19Exact matchLisbon, PortugalHQ recorded Sep 6, 202651-20035 contacts →

Exact match

“A Sendys é uma consultora tecnológica que se dedica ao desenvolvimento, manutenção, comercialização e suporte de soluções de gestão para pequenas, médias e grandes empresas, com…”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
20Exact match165, PortugalHQ recorded Sep 6, 202651-20031 contacts →

Exact match

“Wrightia is a thriving community of highly skilled experts passionate about delivering impactful solutions that address real-world problems and endure over time.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
21Exact matchOeiras, PortugalHQ recorded Sep 6, 202611-5026 contacts →

Exact match

“A ETNAGA é uma empresa fornecedora de produtos na competência de Serviços de Tecnologia, orientada para a qualidade, inovação, custo e prazos de realização competitivos.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
22Exact matchPombal, PortugalHQ recorded Sep 6, 202611-5026 contacts →

Exact match

“Empresa de Tecnologias da Informação com mais de 25 anos de experiência no desenvolvimento e integração de Soluções tecnológicas.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
23Exact matchLeiria, PortugalHQ recorded Sep 6, 202611-5026 contacts →

Exact match

“A hes é uma empresa prestadora de serviços e fornecedora de soluções globais na área dos sistemas de informação.”

Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase

Showing 23 of 296 systems software contractors based in Portugal

See the full list, filter by size, metro and specialty, and access 1,227 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Systems software contractors based in Portugal at a glance

As of Sep 6, 2026
32.3%Verified-email coverage
4.6%Mobile-number coverage
12.9Average contacts per company
1-10Median size (employees)
19.6%Largest-city concentration · Lisbon
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
179
11-50
87
51-200
26
201-500
3
501-1,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

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 Portugal whose business descriptions match “systems software contractors” 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 1,227 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 September 6, 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.

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 “systems software contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many systems software contractors are there based in Portugal?

RevenueBase identified 296 company matches for systems software contractors associated with Portugal as of September 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?

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

Which city has the most systems software contractors?

Lisbon leads with 58 company records, followed by Porto (25) and Aveiro (12).

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 1,227 professional contacts with verified work emails tracked across these 296 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 September 6, 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.