Company lists · Data refreshed September 2026

Top 25 IT systems integration firms based in Greece

Name: IT systems integration firms based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 161 companies tracked

RevenueBase identified 161 IT systems integration firms headquartered in Greece as of September 2026 and tracks 3,367 professional contacts across them, including 1,462 with verified work emails. Athens is the largest hub.

This list covers IT systems integration firms headquartered in Greece, 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

161Companies

3,367Contacts tracked

1,462Verified emails

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The 25 largest IT systems integration firms based in Greece

Ranked by team size

Top 25 of 161 IT systems integration firms based in Greece, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to IT systems integration firms: 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	Space Hellas S.A	Partial evidence	Ag. Paraskevi, GreeceHQ checked Sep 28, 2026	501-1,000	442 contacts →
	Partial evidence “Founded in 1985, Space Hellas is a leading system integrator that offers a comprehensive range of integrated ICT and security solutions and services complemented by after-sales…” Source: RevenueBase Database · checked Sep 28, 2026
2	Singularlogic	Indirect evidence	Cholargos, GreeceHQ checked Sep 28, 2026	201-500	351 contacts →
	Indirect evidence “SingularLogic, a Space Hellas Group member, is a leading Software Integrator that provides Enterprise Software Solutions and Services for large enterprises and organizations in…” Source: RevenueBase Database · checked Sep 28, 2026
3	Real Consulting	Partial evidence	Chalandri, GreeceHQ checked Sep 28, 2026	501-1,000	285 contacts →
	Partial evidence “Real Consulting, is one of the leading consulting and implementation of integrated IT projects companies in Greece.” Source: RevenueBase Database · checked Sep 28, 2026
4	Performance Technologies S.A	Indirect evidence	Athens, GreeceHQ checked Sep 28, 2026	201-500	227 contacts →
	Indirect evidence “Performance Technologies is a trusted partner for organizations redefining themselves through digital transformation.” Source: RevenueBase Database · checked Sep 28, 2026
5	Teka Systems	Partial evidence	Chalandri, GreeceHQ checked Sep 28, 2026	201-500	215 contacts →
	Partial evidence “Teka Systems - Business Solutions, founded in 1975 and for more than 50 years is a leading business technology company in Greece and Southeastern Europe with extensive experience…” Source: RevenueBase Database · checked Sep 28, 2026
6	Cosmos Business Systems	Partial evidence	Metamorfosi, GreeceHQ checked Sep 28, 2026	51-200	202 contacts →
	Partial evidence “Cosmos Business Systems is a leading Greek company that specializies in Information Technology and Telecommunications.” Source: RevenueBase Database · checked Sep 28, 2026
7	Byte Computer S.A	Indirect evidence	Athens, GreeceHQ checked Sep 28, 2026	201-500	181 contacts →
	Indirect evidence “ΒΥΤΕ COMPUTER S.A is a leading Greek Information Technology and Communications (ICT) Integrator with a dynamic presence of over 30 years in the Greek ICT Market and focus on the…” Source: RevenueBase Database · checked Sep 28, 2026
8	Ubitech	Partial evidence	Athens, GreeceHQ checked Sep 28, 2026	51-200	155 contacts →
	Partial evidence “UBITECH is a leading, innovative software house, systems integrator and technology provider, established to provide leading edge intelligent technical solutions and consulting…” Source: RevenueBase Database · checked Sep 28, 2026
9	Algosystems S.A	Partial evidence	Athens, GreeceHQ checked Sep 28, 2026	51-200	109 contacts →
	Partial evidence “Algosystems is a reliable and dynamic Systems Integrator / Service Provider, active in ICT & Cyber Security, Automation and Metrology.” Source: RevenueBase Database · checked Sep 28, 2026
10	Ifsas Group	Partial evidence	Kifissia, GreeceHQ checked Sep 28, 2026	51-200	68 contacts →
	Partial evidence “IFSAS Group is a leading integrator of advanced Safety, Security & Homeland Security solutions, delivering end-to-end systems that protect people, assets, and critical operations.” Source: RevenueBase Database · checked Sep 28, 2026
11	Connect Line	Indirect evidence	Marousi, GreeceHQ checked Sep 28, 2026	51-200	62 contacts →
	Indirect evidence “Η πορείας μας στην επιτυχία: Η Connectline ιδρύθηκε το 1998 και δραστηριοποιείται με επιτυχία στο χώρο της πληροφορικής.” Source: RevenueBase Database · checked Sep 28, 2026
12	Ergologic S.A	Indirect evidence	Patras, GreeceHQ checked Sep 28, 2026	11-50	51 contacts →
	Indirect evidence “Ergologic SA was founded in in Patras.” Source: RevenueBase Database · checked Sep 28, 2026
13	Wizz IT	Indirect evidence	Cholargos, GreeceHQ checked Sep 28, 2026	11-50	49 contacts →
	Indirect evidence “Technology Consulting” Source: RevenueBase Database · checked Sep 28, 2026
14	Smartns Technological S.A	Partial evidence	Athens, GreeceHQ checked Sep 28, 2026	51-200	43 contacts →
	Partial evidence “SmartNS Technological S.A, founded in 2004 and headquartered in Athens, Greece, is a trusted leader in IT infrastructure design and implementation, security, and automation…” Source: RevenueBase Database · checked Sep 28, 2026
15	Improvit	Strong evidence	Athens, GreeceHQ checked Sep 28, 2026	51-200	36 contacts →
	Strong evidence “Overview improvIT is a consulting company specializing in IT strategy, business analysis and systems integration for the insurance industry.” Source: RevenueBase Database · checked Sep 28, 2026
16	Blend Technologies	Indirect evidence	Athens, GreeceHQ checked Sep 28, 2026	51-200	34 contacts →
	Indirect evidence “Complexity shouldn’t be a barrier to growth.” Source: RevenueBase Database · checked Sep 28, 2026
17	Elmisystems SA	Partial evidence	Athens, GreeceHQ checked Sep 28, 2026	51-200	33 contacts →
	Partial evidence “ELMISYSTEMS is a large Greek IT company with a leading role in the IT Industry and the Retail Business in Greece.” Source: RevenueBase Database · checked Sep 28, 2026
18	Msensis S.A	Partial evidence	Maroussi, GreeceHQ checked Sep 28, 2026	11-50	25 contacts →
	Partial evidence “mSensis, founded in 2007, is a European system integrator serving a growing base of leading Service Providers, Financial Institutions, large enterprises and the Public Sector.” Source: RevenueBase Database · checked Sep 28, 2026
19	Amplus S.A	Partial evidence	Athens, GreeceHQ checked Sep 28, 2026	51-200	23 contacts →
	Partial evidence “With a starting point back in the decade of AMPLUS SA has managed to possess a major market share of the IT Solutions industry.” Source: RevenueBase Database · checked Sep 28, 2026
20	Scan Saic Information Systems	Partial evidence	Athens, GreeceHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “SCAN Information Systems: Your business partner in Greece An established market leader in Greece, SCAN Information Systems, offers a multitude of tested and field proven solutions…” Source: RevenueBase Database · checked Sep 28, 2026
21	Existanze Connectingdots	Indirect evidence	Agía Paraskeví, GreeceHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “Existanze #connectingdots is a highly competitive multidisciplinary software company.” Source: RevenueBase Database · checked Sep 28, 2026
22	Panou S.A	Strong evidence	Athens, GreeceHQ checked Sep 28, 2026	11-50	19 contacts →
	Strong evidence “Who we are: Leading technology systems integrator, engaged in the trading and installation of Audiovisual, Automation, IT, Lighting, Security and homeland Security systems.” Source: RevenueBase Database · checked Sep 28, 2026
23	Precicom S.A	Indirect evidence	Chalandri, GreeceHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “30 years of success and Clients TRUST we earn every single day!” Source: RevenueBase Database · checked Sep 28, 2026
24	Binarytree	Partial evidence	Metamorfosi, GreeceHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “Binary Tree was founded by professionals with notable presence in the Greek Information Technology scene, with the purpose of providing solutions to IT implementation and IT…” Source: RevenueBase Database · checked Sep 28, 2026
25	Netsquare Corporation	Partial evidence	Athens, GreeceHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Netsquare is dealing with the design, installation and support of information systems and network infrastructures by proposing optimal customization taking into account the…” 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: IT systems integration firms. 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 IT systems integration firms.
Partial evidence: Its own public description names part of IT systems integration firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT systems integration firms. 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 161 IT systems integration firms based in Greece

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IT systems integration firms based in Greece at a glance

As of Sep 28, 2026

43.4%Verified-email coverage

20.9Average contacts per company

1-10Median size (employees)

26.1%Largest-city concentration · Athens

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Greece, so it is reported there. Company counts and contact totals on this page are exact for Greece, over 161 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 IT systems integration firms, 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 Greece whose own description of what they do matches “IT systems integration firms”. 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 IT systems integration firms), 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 IT systems integration firms, and records with no verified work email. Companies headquartered outside Greece 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, 1,462 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.

IT systems integration firms by metro

IT systems integration firms in Athens42

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 IT systems integration firms, 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 IT systems integration firms are there based in Greece?

RevenueBase identified 161 IT systems integration firms headquartered in Greece 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?

Space Hellas S.A, headquartered in Greece, tops this list with the largest team on record.

Which city has the most IT systems integration firms?

Athens leads with 42 headquartered companies, followed by Chalandri (6) and Attica (4).

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 1,462 verified decision-maker contacts tracked across these 161 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.