Company lists · Data refreshed September 2026

Top 25 Legacy system modernization based in Portugal

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 90 companies tracked

RevenueBase identified 90 legacy system modernization headquartered in Portugal as of September 2026 and tracks 1,673 professional contacts across them, including 433 with verified work emails. Lisboa is the largest hub.

This list covers legacy system modernization 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

90Companies

1,673Contacts tracked

433Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest legacy system modernization based in Portugal

Ranked by team size

Top 25 of 90 legacy system modernization 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 legacy system modernization: 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 20, 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 20, 2026
2	Securnet	Indirect evidence	Ermesinde, PortugalHQ checked Sep 20, 2026	51-200	129 contacts →
	Indirect evidence “Fundada em 2002, a SECURNET dedica-se à integração de tecnologias de informação, prestando um conjunto de serviços técnicos especializados de consultoria e auditoria, engenharia…” Source: RevenueBase Database · checked Sep 20, 2026
3	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
4	Itgest Portugal	Partial evidence	Matosinhos, PortugalHQ checked Sep 20, 2026	201-500	82 contacts →
	Partial evidence “ITGest is an international technology and information systems company, specialised in digital transformation projects across different industries.” Source: RevenueBase Database · checked Sep 20, 2026
5	IT Consulting	Indirect evidence	Lisboa, PortugalHQ checked Sep 20, 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 20, 2026
6	Orbcom	Indirect evidence	Matosinhos, PortugalHQ checked Sep 20, 2026	51-200	70 contacts →
	Indirect evidence “At ORBCOM, we are passionate about technology and innovation.” Source: RevenueBase Database · checked Sep 20, 2026
7	Arentia, S.A	Indirect evidence	Leiria, PortugalHQ checked Sep 20, 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 20, 2026
8	Morphis Technologies	Strong evidence	Lisboa, PortugalHQ checked Sep 20, 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 20, 2026
9	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
10	Tecnibite	Partial evidence	Lisboa, PortugalHQ checked Sep 20, 2026	11-50	17 contacts →
	Partial evidence “Tecnibite provides services in the field of information technology, such as the analysis and development of software solutions, systems integration, design and implementation of…” Source: RevenueBase Database · checked Sep 20, 2026
11	Bmwt Consultoria E Serviços Informáticos	Indirect evidence	Olivais - Lisboa, PortugalHQ checked Sep 20, 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 20, 2026
12	Createinfor	Indirect evidence	Caldas Da Rainha, PortugalHQ checked Sep 20, 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 20, 2026
13	Pchouse Portugal	Indirect evidence	Lisbon, PortugalHQ checked Sep 20, 2026	1-10	11 contacts →
	Indirect evidence “Who we are.” Source: RevenueBase Database · checked Sep 20, 2026
14	Tecnasys Global IT Solutions	Indirect evidence	Lisboa, PortugalHQ checked Sep 20, 2026	51-200	10 contacts →
	Indirect evidence “At Tecnasys, we connect businesses worldwide with strategic, secure, and sustainable IT solutions.” Source: RevenueBase Database · checked Sep 20, 2026
15	Streamline	Indirect evidence	Coimbra, PortugalHQ checked Sep 20, 2026	1-10	10 contacts →
	Indirect evidence “IT related.” Source: RevenueBase Database · checked Sep 20, 2026
16	Proxsys Solutions	Indirect evidence	Ermesinde, PortugalHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “A PROXSYS SOLUTIONS é uma empresa integradora de soluções tecnológicas, com vasta experiência na área de Sistemas de Informação e Segurança.” Source: RevenueBase Database · checked Sep 20, 2026
17	MTI Consulting	Indirect evidence	Barcelos, PortugalHQ checked Sep 20, 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 20, 2026
18	Web4u	Partial evidence	Penafiel, PortugalHQ checked Sep 20, 2026	11-50	6 contacts →
	Partial evidence “WEB4U provides business IT services, consulting for systems implementation and develops tailored training and funded training for its customers across the country.” Source: RevenueBase Database · checked Sep 20, 2026
19	Passion4sky	Indirect evidence	Lisboa, PortugalHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “We are a technology consulting company.” Source: RevenueBase Database · checked Sep 20, 2026
20	Magikevolution Consulting	Indirect evidence	Trofa, PortugalHQ checked Sep 20, 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 20, 2026
21	Bitshop DE Nogueira & Nogueira LDA	Indirect evidence	Portimão, PortugalHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “A BitShop – Soluções Informáticas, é uma empresa que actua na área das tecnologias de informação, quer no âmbito de soluções pessoais, quer no âmbito de soluções empresariais.” Source: RevenueBase Database · checked Sep 20, 2026
22	Inodata	Indirect evidence	Oeiras, PortugalHQ checked Sep 20, 2026	1-10	4 contacts →
	Indirect evidence “A nossa empresa nasceu da vontade de dar continuidade a um projeto ao qual nos dedicámos uma década das nossas vidas.” Source: RevenueBase Database · checked Sep 20, 2026
23	Rial Informatica	Indirect evidence	Águeda, PortugalHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “A RIAL é uma empresa especializada na definição, concepção e implementação de soluções na área dos Sistemas e Tecnologias de Informação.” Source: RevenueBase Database · checked Sep 20, 2026
24	Solinf, Soluções Informáticas	Indirect evidence	Ovar, PortugalHQ checked Sep 20, 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 20, 2026
25	Inspirennovit, LDA	Indirect evidence	Almada, PortugalHQ checked Sep 20, 2026	11-50	2 contacts →
	Indirect evidence “A InspirennovIT, com escritórios em Lisboa, Benavente e Maia, foi constituída em Fevereiro de 2010, com o objectivo de prestar serviços no desenvolvimento e prestação de serviços…” 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: legacy system modernization. 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.
Partial evidence: Its own public description names part of legacy system modernization, 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. 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 90 legacy system modernization based in Portugal

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 433 reachable decision-makers.

Free signup · no credit card

View the full list →

Legacy system modernization based in Portugal at a glance

As of Sep 20, 2026

25.9%Verified-email coverage

18.6Average contacts per company

1-10Median size (employees)

14.4%Largest-city concentration · Lisboa

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 90 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, 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”. 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), 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, 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, 433 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 legacy system modernization, 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 are there based in Portugal?

RevenueBase identified 90 legacy system modernization 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?

Lisboa leads with 13 headquartered companies, followed by Porto (9) 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 433 verified decision-maker contacts tracked across these 90 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.

Ready to reach these companies? Verified emails and direct dials for all 90 legacy system modernization based in Portugal. Start with a free account, no credit card.

Download this list →

Related lists

Legacy system modernization by geography

Browse the directory

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.