Company lists · Data refreshed September 2026

Top 25 Legacy system modernization consultancies based in Portugal

Name: Legacy system modernization consultancies based in Portugal
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 78 companies tracked

RevenueBase identified 78 company matches for legacy system modernization consultancies associated with Portugal as of September 2026 and tracks 1,277 professional contacts across them, including 182 with verified work emails. Lisbon is the largest hub.

This list covers company matches for legacy system modernization consultancies 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 28, 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 28, 2026 How this list was built

78Companies

1,277Contacts tracked

182Verified emails

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The 25 largest legacy system modernization consultancies based in Portugal

Ranked by team size

Top 25 of 78 company matches for legacy system modernization consultancies based in Portugal, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Timestamp	Exact match	Lisbon, PortugalHQ recorded Sep 28, 2026	1,001-5,000	582 contacts →
	Exact match “Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Decsis Sistemas DE Informação	Exact match	Porto, PortugalHQ recorded Sep 28, 2026	51-200	105 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 28, 2026 · View company records in RevenueBase
3	IT Consulting	Exact match	Lisbon, PortugalHQ recorded Sep 28, 2026	n/a	72 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 28, 2026 · View company records in RevenueBase
4	Yellowipe	Exact match	Porto, PortugalHQ recorded Sep 28, 2026	51-200	49 contacts →
	Exact match “YellowIpe® is your IT professional services consultancy.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Lusodata	Exact match	Alcântara, PortugalHQ recorded Sep 28, 2026	11-50	36 contacts →
	Exact match “In 1982, we founded Lusodata out of a desire to develop innovative IT solutions that meet the evolving needs of people and organizations.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Wrightia	Exact match	165, PortugalHQ recorded Sep 28, 2026	51-200	31 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 28, 2026 · View company records in RevenueBase
7	Onile IT	Exact match	Lisbon, PortugalHQ recorded Sep 28, 2026	11-50	27 contacts →
	Exact match “Information technology consulting services” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Morphis Technologies	Exact match	Lisbon, PortugalHQ recorded Sep 28, 2026	51-200	25 contacts →
	Exact match “With more than 20 years’ real-world legacy modernization experience, Morphis works with leading global enterprises, software vendors and system integrators to cloud-enable legacy…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Wisekey Consulting Group	Exact match	Bragança, PortugalHQ recorded Sep 28, 2026	11-50	10 contacts →
	Exact match “O seu parceiro de negócios de nova geração.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Clearis S.A	Exact match	Lisbon, PortugalHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “Building value added solutions and delivering efficient integration platforms Clearis is an IT company with the major focus on consulting, integrating and developing solutions and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Hb-It Consulting	Exact match	Lisbon, PortugalHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “We continue to see business leads juggle to tell stories using excel sheets and powerpoint, and we are committed to get that to an end By creating an environment where IT serves…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	MTI Consulting	Exact match	Barcelos, PortugalHQ recorded Sep 28, 2026	11-50	7 contacts →
	Exact match “A MTI Consulting, é uma empresa do Grupo MEGA, que atua na área das Tecnologias de Informação, onde conta com uma equipa multidisciplinar com mais de 15 anos de experiência no…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	It2advise	Exact match	Odivelas, PortugalHQ recorded Sep 28, 2026	1-10	6 contacts →
	Exact match “Com uma abordagem 360º a iT2Advise foi criada para responder ás necessidades tecnológicas das empresas, disponibilizando uma gama de serviços e produtos que permitem apoiar os…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	RSS Consultoria Informática, LDA	Exact match	Vila Nova De Gaia, PortugalHQ recorded Sep 28, 2026	1-10	5 contacts →
	Exact match “Oferecemos aos nossos clientes a forma de optimizar e automatizar os seus processos, aumentando a produtividade e maximizando a utilização dos recursos à sua disposição.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Passion4sky	Exact match	Lisbon, PortugalHQ recorded Sep 28, 2026	11-50	5 contacts →
	Exact match “We are a technology consulting company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Deltacoders	Exact match	Lisbon, PortugalHQ recorded Sep 28, 2026	1-10	4 contacts →
	Exact match “Our Services Led by a team of professionals having years of hands-on experience in IT consultancy, we take pride in delivering high quality enterprise technology solutions with…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Magikevolution Consulting	Exact match	Trofa, PortugalHQ recorded Sep 28, 2026	1-10	4 contacts →
	Exact match “Consultoria de Sistemas implementação e administração de redes locais e remotas, Sistemas Operativos, Virtualização, Segurança, Disaster-recovery e Cloud-computing.* Consultoria…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Solinf, Soluções Informáticas	Exact match	Ovar, PortugalHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match “A Solinf é uma empresa de consultoria de tecnologias de informação, que se dedica ao desenvolvimento e implementação de soluções globais, nas diversas áreas de sistemas de…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	MEL IT	Exact match	Viana Do Castelo, PortugalHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match “A MEL IT - Consultoria Informática LDA nasce como fornecedora de Soluções Integradas, para que os seus clientes possam responder ágilmente às necessidades próprias de cada negócio.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Ioverse	Exact match	Carnaxide, PortugalHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “At IOverse, we specialize in guiding businesses through the complexities of technology, empowering them to make informed and strategic tech decisions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Oversight	Exact match	Ramada, PortugalHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “A OVERSIGHT é uma empresa de Consultoria em Sistemas de Informação dedicada a empresas.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Totalsoft	Exact match	Odivelas, PortugalHQ recorded Sep 28, 2026	11-50	2 contacts →
	Exact match “A empresa TOTALSOFT apresenta-se como um parceiro fortemente especializado no fornecimento de serviços de CONSULTORIA na área das tecnologias de informação no mercado das PMEs, na…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Ph7x Systems	Exact match	Setúbal (são Sebastião), PortugalHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Our mission is to turn ideas into valuable digital solutions by combining strategic vision with technical expertise.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Information Technologies To ALL	Exact match	Vila Nova De Gaia, PortugalHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “A nossa missão consiste em ajudar aos nossos clientes a aumentarem a eficiência e produtividade das suas empresas, através do estudo, desenvolvimento, e implementação de soluções…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Nortrest Informática LD	Exact match	Póvoa Do Varzim, PortugalHQ recorded Sep 28, 2026	1-10	2 contacts →
	Exact match “Num mercado em constante mutação é necessário que todas as empresas se empenhem em melhorar os seus sistemas informáticos, a NortRest actua junto dos seus clientes estudando…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “legacy system modernization consultancies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 78 legacy system modernization consultancies based in Portugal

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Legacy system modernization consultancies based in Portugal at a glance

As of Sep 28, 2026

14.3%Verified-email coverage

16.4Average contacts per company

1-10Median size (employees)

35.9%Largest-city concentration · Lisbon

Sep 28, 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 78 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 Portugal whose business descriptions match “legacy system modernization consultancies” 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 182 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 28, 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 “legacy system modernization consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many legacy system modernization consultancies are there based in Portugal?

RevenueBase identified 78 company matches for legacy system modernization consultancies 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?

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

Which city has the most legacy system modernization consultancies?

Lisbon leads with 28 company records, followed by Porto (7) and Vila Nova De Gaia (3).

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 182 professional contacts with verified work emails tracked across these 78 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 28, 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.