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 legacy system modernization consultancies headquartered in Portugal as of September 2026 and tracks 1,277 professional contacts across them, including 182 with verified work emails. Lisboa is the largest hub.

This list covers legacy system modernization consultancies 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 28, 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 28, 2026 86% judged on-target in blind review

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 legacy system modernization consultancies based in Portugal, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to legacy system modernization consultancies: 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	Timestamp	Partial evidence	Lisboa, PortugalHQ checked Sep 28, 2026	1,001-5,000	582 contacts →
	Partial evidence “Timestamp is a leading IT consultancy with over 20 years’ experience in digital transformation and systems integration.” Source: RevenueBase Database · checked Sep 28, 2026
2	Decsis Sistemas DE Informação	Indirect evidence	Porto, PortugalHQ checked Sep 28, 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 28, 2026
3	IT Consulting	Indirect evidence	Lisboa, PortugalHQ checked Sep 28, 2026	n/a	72 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
4	Yellowipe	Indirect evidence	Porto, PortugalHQ checked Sep 28, 2026	51-200	49 contacts →
	Indirect evidence “YellowIpe® is your IT professional services consultancy.” Source: RevenueBase Database · checked Sep 28, 2026
5	Lusodata	Indirect evidence	Alcântara, PortugalHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “In 1982, we founded Lusodata out of a desire to develop innovative IT solutions that meet the evolving needs of people and organizations.” Source: RevenueBase Database · checked Sep 28, 2026
6	Wrightia	Indirect evidence	165, PortugalHQ checked Sep 28, 2026	51-200	31 contacts →
	Indirect evidence “Wrightia is a thriving community of highly skilled experts passionate about delivering impactful solutions that address real-world problems and endure over time.” Source: RevenueBase Database · checked Sep 28, 2026
7	Onile IT	Indirect evidence	Lisboa, PortugalHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “Information technology consulting services” Source: RevenueBase Database · checked Sep 28, 2026
8	Morphis Technologies	Strong evidence	Lisboa, PortugalHQ checked Sep 28, 2026	51-200	25 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
9	Wisekey Consulting Group	Indirect evidence	Bragança, PortugalHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “O seu parceiro de negócios de nova geração.” Source: RevenueBase Database · checked Sep 28, 2026
10	Clearis S.A	Indirect evidence	Lisbon, PortugalHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
11	Hb-It Consulting	Indirect evidence	Lisbon, PortugalHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
12	MTI Consulting	Indirect evidence	Barcelos, PortugalHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
13	It2advise	Indirect evidence	Odivelas, PortugalHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
14	RSS Consultoria Informática, LDA	Indirect evidence	Vila Nova De Gaia, PortugalHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
15	Passion4sky	Indirect evidence	Lisboa, PortugalHQ checked Sep 28, 2026	11-50	5 contacts →
	Indirect evidence “We are a technology consulting company.” Source: RevenueBase Database · checked Sep 28, 2026
16	Deltacoders	Indirect evidence	Lisboa, PortugalHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
17	Magikevolution Consulting	Indirect evidence	Trofa, PortugalHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Consultoria de Sistemas implementação e administração de redes locais e remotas, Sistemas Operativos, Virtualização, Segurança, Disaster-recovery e Cloud-computing.* Consultoria…” Source: RevenueBase Database · checked Sep 28, 2026
18	Solinf, Soluções Informáticas	Indirect evidence	Ovar, PortugalHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
19	MEL IT	Indirect evidence	Viana Do Castelo, PortugalHQ checked Sep 28, 2026	1-10	3 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 28, 2026
20	Ioverse	Indirect evidence	Carnaxide, PortugalHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “At IOverse, we specialize in guiding businesses through the complexities of technology, empowering them to make informed and strategic tech decisions.” Source: RevenueBase Database · checked Sep 28, 2026
21	Oversight	Indirect evidence	Ramada, PortugalHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “A OVERSIGHT é uma empresa de Consultoria em Sistemas de Informação dedicada a empresas.” Source: RevenueBase Database · checked Sep 28, 2026
22	Totalsoft	Indirect evidence	Odivelas, PortugalHQ checked Sep 28, 2026	11-50	2 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
23	Ph7x Systems	Indirect evidence	Setúbal (são Sebastião), PortugalHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Our mission is to turn ideas into valuable digital solutions by combining strategic vision with technical expertise.” Source: RevenueBase Database · checked Sep 28, 2026
24	Information Technologies To ALL	Indirect evidence	Vila Nova De Gaia, PortugalHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 2026
25	Nortrest Informática LD	Indirect evidence	Póvoa Do Varzim, PortugalHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 28, 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: legacy system modernization consultancies. 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 legacy system modernization consultancies.
Partial evidence: Its own public description names part of legacy system modernization consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name legacy system modernization consultancies. 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 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)

24.4%Largest-city concentration · Lisboa

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

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among legacy system modernization consultancies, 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 “legacy system modernization consultancies”. 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 legacy system modernization consultancies), 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 legacy system modernization consultancies, 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, 182 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 28, 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 legacy system modernization consultancies, 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 legacy system modernization consultancies are there based in Portugal?

RevenueBase identified 78 legacy system modernization consultancies 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?

Timestamp, headquartered in Lisboa, tops this list with the largest team on record.

Which city has the most legacy system modernization consultancies?

Lisboa leads with 19 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 182 verified decision-maker contacts tracked across these 78 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 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 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.