Company lists · Data refreshed September 2026

Top 25 Custom business software companies based in Greece

Name: Custom business software companies based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 117 companies tracked

RevenueBase identified 117 custom business software companies headquartered in Greece as of September 2026 and tracks 1,304 professional contacts across them, including 287 with verified work emails. Athens is the largest hub.

This list covers custom business software companies 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 21, 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 21, 2026 86% judged on-target in blind review

117Companies

1,304Contacts tracked

287Verified emails

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The 25 largest custom business software companies based in Greece

Ranked by team size

Top 25 of 117 custom business software companies based in Greece, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to custom business software companies: 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	Entersoft	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	501-1,000	324 contacts →
	Partial evidence “Entersoft is a leading business software and services provider in South East Europe and the Middle East.” Source: RevenueBase Database · checked Sep 21, 2026
2	Epsilon Singularlogic	Indirect evidence	Μελίσσια, GreeceHQ checked Sep 21, 2026	201-500	197 contacts →
	Indirect evidence “Epsilon SingularLogic, a member of the Epsilon Net Group, provides design, development, and implementation of comprehensive and innovative IT Systems solutions, creating added…” Source: RevenueBase Database · checked Sep 21, 2026
3	Semantic Business Software	Partial evidence	Pylaia, GreeceHQ checked Sep 21, 2026	51-200	37 contacts →
	Partial evidence “SEMANTIC BUSINESS SOFTWARE was founded in 1997.” Source: RevenueBase Database · checked Sep 21, 2026
4	01 Solutions Hellas	Partial evidence	Chalandri, GreeceHQ checked Sep 21, 2026	11-50	33 contacts →
	Partial evidence “Είμαστε ένα Software House το οποίο λειτουργεί στην Ελλάδα από το 2011, με συνεχή ανοδική πορεία και διεύρυνση της πελατειακής βάσης.” Source: RevenueBase Database · checked Sep 21, 2026
5	Ilyda SA	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	29 contacts →
	Partial evidence “The aim of ILYDA is the development of software and the provision of technologically advanced complete services in the area of information technology and telecommunications, with…” Source: RevenueBase Database · checked Sep 21, 2026
6	ABCIT	Indirect evidence	Amarousion, GreeceHQ checked Sep 21, 2026	11-50	28 contacts →
	Indirect evidence “Business Application IT Services Accounting programms ERP CRM Solution” Source: RevenueBase Database · checked Sep 21, 2026
7	Dgsoft Hellas	Partial evidence	Peristeri, GreeceHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “DGSOFT was founded in 2006 and it's active since then in the field of integrated software solutions such as: • ERP and CRM implementation & integration • Business Software…” Source: RevenueBase Database · checked Sep 21, 2026
8	Advanced Consulting S.A Ad.Con	Partial evidence	Neos Kosmos - Athens, GreeceHQ checked Sep 21, 2026	11-50	20 contacts →
	Partial evidence “More than 30 years, we Provide & Develop High Value I.T Business Software solutions & Services for each Business.” Source: RevenueBase Database · checked Sep 21, 2026
9	Vortex Software	Partial evidence	Metamorfosi, GreeceHQ checked Sep 21, 2026	11-50	20 contacts →
	Partial evidence “VORTEX is an innovative and modular enterprise platform designed to streamline operations across service, maintenance, and customer management.” Source: RevenueBase Database · checked Sep 21, 2026
10	SGA G. Avramidis S.A	Partial evidence	Thessaloniki, GreeceHQ checked Sep 21, 2026	11-50	17 contacts →
	Partial evidence “SGA is a software house that designs, implements and supports integrated software solutions since 1996.” Source: RevenueBase Database · checked Sep 21, 2026
11	G-Logic S.A	Indirect evidence	Kallithea, GreeceHQ checked Sep 21, 2026	11-50	14 contacts →
	Indirect evidence “Από το η G-Logic Α.Ε.” Source: RevenueBase Database · checked Sep 21, 2026
12	Biztec Computer Science Innovations	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “BizTEC is a dynamically developing company operating on the IT market, currently focused within the Greek area.” Source: RevenueBase Database · checked Sep 21, 2026
13	Horizon365	Partial evidence	Aigaleo, GreeceHQ checked Sep 21, 2026	1-10	11 contacts →
	Partial evidence “Horizon 365 offers SaaS Solutions, Custom Web and Mobile Development, providing client reliable solutions that are tailored to their unique needs.” Source: RevenueBase Database · checked Sep 21, 2026
14	Open System Solutions SA	Indirect evidence	Athens, GreeceHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Overview: WE PROVIDE INTEGRATED BUSINESS SOLUTIONS TO SOLVE YOUR MOST PRESSING PROBLEMS, SO YOU CAN FOCUS ON RUNNING YOUR BUSINESS BETTER.” Source: RevenueBase Database · checked Sep 21, 2026
15	wisetech.itc	Partial evidence	Kavala, GreeceHQ checked Sep 21, 2026	51-200	11 contacts →
	Partial evidence “At WiseTech, we specialize in building intelligent, custom-tailored technology solutions for businesses operating in complex environments.” Source: RevenueBase Database · checked Sep 21, 2026
16	Darwin IT Evolution	Partial evidence	Thessaloniki, GreeceHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “We are software development company located in Thessaloniki, Greece with a team consisting of specialized professionals and sales office in Athens.” Source: RevenueBase Database · checked Sep 21, 2026
17	Newgen Software Solutions O.E	Partial evidence	Piraeus, GreeceHQ checked Sep 21, 2026	1-10	8 contacts →
	Partial evidence “NEWGEN SOFTWARE SOLUTIONS Ltd – a software development company – has been operating in Greece since 2019, showing continuous growth and expansion of its client base.” Source: RevenueBase Database · checked Sep 21, 2026
18	Aardvark, ISC SA	Indirect evidence	Marousi, GreeceHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “AArdVark, isc SA is a Greek ΙΤ company founded in 1996.” Source: RevenueBase Database · checked Sep 21, 2026
19	Smarttree	Indirect evidence	Agios Dimitrios, GreeceHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “smartTREE is a premium, tech oriented, business consulting company.” Source: RevenueBase Database · checked Sep 21, 2026
20	Ergon Iris	Partial evidence	Thessaloniki, GreeceHQ checked Sep 21, 2026	11-50	7 contacts →
	Partial evidence “Our exclusive line of products is top quality, high-end technology software for companies and institutions of the public and private sectors.” Source: RevenueBase Database · checked Sep 21, 2026
21	upd8.gr	Indirect evidence	Rodos, GreeceHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “The company with the name upd8.gr is active in the field of Cloud application development, digital management and business operation.” Source: RevenueBase Database · checked Sep 21, 2026
22	Infosector	Indirect evidence	Ηράκλειο, GreeceHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “H Infosector ιδρύθηκε το 2005 από μηχανικούς λογισμικού που δραστηριοποιούνται στο χώρο από το 1990 και εξειδικεύεται στη μελέτη, σχεδίαση και ανάπτυξη λογισμικού διαχείρισης…” Source: RevenueBase Database · checked Sep 21, 2026
23	Emendsys	Partial evidence	Koropi, GreeceHQ checked Sep 21, 2026	11-50	6 contacts →
	Partial evidence “emendSys builds custom-made IT solutions for business challenges.” Source: RevenueBase Database · checked Sep 21, 2026
24	Qualisys Software	Partial evidence	Athens, GreeceHQ checked Sep 21, 2026	1-10	6 contacts →
	Partial evidence “QUALISYS SOFTWARE – Λύσεις Λογισμικού για την Ελληνική Επιχείρηση Από το 2004, η QUALISYS SOFTWARE σχεδιάζει και αναπτύσσει καινοτόμες λύσεις λογισμικού που απλοποιούν τη…” Source: RevenueBase Database · checked Sep 21, 2026
25	Project Team GR	Indirect evidence	Εύοσμος, GreeceHQ checked Sep 21, 2026	1-10	6 contacts →
	Indirect evidence “Όλες οι ομάδες της εταιρίας μας συνεργάζονται με επιτυχία για την επίτευξη των στόχων και των απαιτήσεων του κάθε πελάτη ξεχωριστά.” Source: RevenueBase Database · checked Sep 21, 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: custom business software companies. 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 custom business software companies.
Partial evidence: Its own public description names part of custom business software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom business software companies. 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 117 custom business software companies based in Greece

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Custom business software companies based in Greece at a glance

As of Sep 21, 2026

22.0%Verified-email coverage

11.1Average contacts per company

1-10Median size (employees)

25.6%Largest-city concentration · Athens

Sep 21, 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 117 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 custom business software companies, 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 “custom business software companies”. 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 custom business software companies), 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 custom business software companies, 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, 287 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 21, 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.

Custom business software companies by metro

Custom business software companies in Athens30

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 custom business software companies, 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 custom business software companies are there based in Greece?

RevenueBase identified 117 custom business software companies 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?

Entersoft, headquartered in Athens, tops this list with the largest team on record.

Which city has the most custom business software companies?

Athens leads with 30 headquartered companies, followed by Kalamaria (2) and Thessaloniki (2).

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 287 verified decision-maker contacts tracked across these 117 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 21, 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.