Company lists · Data refreshed September 2026

Top 25 Legacy system modernization firms based in Austria

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

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 127 companies tracked

RevenueBase identified 127 legacy system modernization firms headquartered in Austria as of September 2026 and tracks 1,469 professional contacts across them, including 777 with verified work emails. Wien is the largest hub.

This list covers legacy system modernization firms headquartered in Austria, 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

127Companies

1,469Contacts tracked

777Verified emails

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

The 25 largest legacy system modernization firms based in Austria

Ranked by team size

Top 25 of 127 legacy system modernization firms based in Austria, 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 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	Qualysoft	Indirect evidence	Wien, AustriaHQ checked Sep 20, 2026	501-1,000	306 contacts →
	Indirect evidence “With 25 years of experience serving more than 250 international clients, we are a one-stop shop for IT services and digitizing business needs.” Source: RevenueBase Database · checked Sep 20, 2026
2	Dccs IT Business Solutions	Indirect evidence	Graz, AustriaHQ checked Sep 20, 2026	201-500	213 contacts →
	Indirect evidence “Your Partner for IT Business Solutions DCCS is a successful provider of forward-looking IT business solutions and a digitalisation partner for corporations, large and medium-sized…” Source: RevenueBase Database · checked Sep 20, 2026
3	Techtalk	Indirect evidence	Wien, AustriaHQ checked Sep 20, 2026	51-200	95 contacts →
	Indirect evidence “Digitale Technologien entfalten ihren Wert, wenn sie nicht nur Prozesse unterstützen, sondern integraler Bestandteil des Leistungsangebots und Kundenerlebnisses sind – und so…” Source: RevenueBase Database · checked Sep 20, 2026
4	Imendo	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	51-200	74 contacts →
	Indirect evidence “Making digital transformation possible - Imendo's core competence.” Source: RevenueBase Database · checked Sep 20, 2026
5	Ontec AG	Partial evidence	Vienna, AustriaHQ checked Sep 20, 2026	51-200	58 contacts →
	Partial evidence “Your specialist for custom software systems, managed IT services, and AI solutions for business-critical processes.” Source: RevenueBase Database · checked Sep 20, 2026
6	Itdesign Software Projects & Consulting Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	51-200	39 contacts →
	Indirect evidence “ITdesign ist Ihr Ansprechpartner, um Ihr Unternehmen fit für die digitale Zukunft zu machen.” Source: RevenueBase Database · checked Sep 20, 2026
7	Moonshiner	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	11-50	39 contacts →
	Indirect evidence “Moonshiner ist ein Digitalunternehmen mit Sitz in Wien.” Source: RevenueBase Database · checked Sep 20, 2026
8	Gepardec IT Services Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	51-200	36 contacts →
	Indirect evidence “We modernize your Java enterprise software to maximize security and minimize maintenance.” Source: RevenueBase Database · checked Sep 20, 2026
9	Fullstacks	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	51-200	36 contacts →
	Indirect evidence “FullStackS ist Ihr vertrauenswürdiger Partner für Ihre digitale Transformation.” Source: RevenueBase Database · checked Sep 20, 2026
10	Solicon IT Gmbh	Indirect evidence	Graz, AustriaHQ checked Sep 20, 2026	11-50	29 contacts →
	Indirect evidence “solicon IT ist ein österreichisches IT-Beratungsunternehmen in Graz und Wien mit dem Fokus auf die Bereiche Data Management, Business Intelligence und Analytics, sowie Databased…” Source: RevenueBase Database · checked Sep 20, 2026
11	Tycom Digital Solutions	Indirect evidence	Schwaz, AustriaHQ checked Sep 20, 2026	51-200	29 contacts →
	Indirect evidence “At TYCOM, we deliver innovative IT services and solutions that make a real difference to our customers' business.” Source: RevenueBase Database · checked Sep 20, 2026
12	NEW Frontier Group	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	1,001-5,000	28 contacts →
	Indirect evidence “New Frontier Group is a leader for Digital Transformation in Central and Eastern Europe and operates worldwide with direct subsidiaries in 16 countries.” Source: RevenueBase Database · checked Sep 20, 2026
13	Bytesource Technology Consulting Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	51-200	25 contacts →
	Indirect evidence “ByteSource Technology Consulting is specialized on delivering high end IT services.” Source: RevenueBase Database · checked Sep 20, 2026
14	Softwareone Österreich Gmbh	Indirect evidence	Wien, AustriaHQ checked Sep 20, 2026	1,001-5,000	22 contacts →
	Indirect evidence “SoftwareOne is redefining how companies build, buy and manage everything in the cloud.” Source: RevenueBase Database · checked Sep 20, 2026
15	Polygons Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	11-50	20 contacts →
	Indirect evidence “Polygons GmbH is a Vienna-based software development and technology consultancy with over 20 years of experience delivering tailor-made digital solutions.” Source: RevenueBase Database · checked Sep 20, 2026
16	Fraiss IT	Indirect evidence	Graz, AustriaHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “Als erfahrener Partner für Digitalisierung & Softwareentwicklung planen, koordinieren und realisieren wir seit mehr als 10 Jahren die Umsetzung von digitalen Prozessen, Produkten…” Source: RevenueBase Database · checked Sep 20, 2026
17	3hillsit	Partial evidence	Wien, AustriaHQ checked Sep 20, 2026	11-50	18 contacts →
	Partial evidence “Die 3HillsIT GmbH ist ein dynamisches Unternehmen mit Sitz in Wien, Österreich, das sich auf individuelle Softwarelösungen, die Integration von CRM-Systemen und das Management der…” Source: RevenueBase Database · checked Sep 20, 2026
18	Bytepoets Gmbh	Indirect evidence	Graz, AustriaHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “BYTEPOETS believe in a future, in which people and technology work as one and interact seamlessly.” Source: RevenueBase Database · checked Sep 20, 2026
19	Cloudwerkstatt	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “We are an end-to-end partner for platform engineering, managed operations, and applied AI.” Source: RevenueBase Database · checked Sep 20, 2026
20	Insideax-Gmbh	Indirect evidence	Pasching, AustriaHQ checked Sep 20, 2026	11-50	15 contacts →
	Indirect evidence “Digital transformation - we support you on the way to digitalize your company” Source: RevenueBase Database · checked Sep 20, 2026
21	Consourcive	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “Wir sind ein Unternehmen, das sich auf Dienstleistungen im Digitalisierungsbereich spezialisiert hat.” Source: RevenueBase Database · checked Sep 20, 2026
22	Ai11 Consulting Gmbh	Partial evidence	Graz, AustriaHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “AI11 unterstützt Unternehmen dabei, Systeme intelligent zu vernetzen, Daten nutzbar zu machen und KI gewinnbringend einzusetzen.” Source: RevenueBase Database · checked Sep 20, 2026
23	duftner.digital	Indirect evidence	Innsbruck, AustriaHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “Die Digitalisierung verändert unsere Lebensumgebung.” Source: RevenueBase Database · checked Sep 20, 2026
24	Enowa Austria Gmbh	Indirect evidence	Vienna, AustriaHQ checked Sep 20, 2026	201-500	9 contacts →
	Indirect evidence “Mit weltweit über 300 Mitarbeiter/-innen an den deutschen Standorten Rottendorf/Würzburg (Hauptsitz), Erkrath/Düsseldorf, Hamburg und München sowie international in Basel (CH)…” Source: RevenueBase Database · checked Sep 20, 2026
25	Cyber-Solutions Software Gmbh	Indirect evidence	Eferding, AustriaHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “Ihr technischer Umsetzungspartner für Webprojekte - flexibel und verlässlich aus Österreich.” 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 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 legacy system modernization firms.
Partial evidence: Its own public description names part of legacy system modernization firms, 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 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 127 legacy system modernization firms based in Austria

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 777 reachable decision-makers.

Free signup · no credit card

View the full list →

Legacy system modernization firms based in Austria at a glance

As of Sep 20, 2026

52.9%Verified-email coverage

11.6Average contacts per company

1-10Median size (employees)

18.9%Largest-city concentration · Wien

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 Austria, so it is reported there. Company counts and contact totals on this page are exact for Austria, over 127 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 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 Austria whose own description of what they do matches “legacy system modernization 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 legacy system modernization 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 legacy system modernization firms, and records with no verified work email. Companies headquartered outside Austria 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, 777 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 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 legacy system modernization firms are there based in Austria?

RevenueBase identified 127 legacy system modernization firms headquartered in Austria 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?

Qualysoft, headquartered in Wien, tops this list with the largest team on record.

Which city has the most legacy system modernization firms?

Wien leads with 24 headquartered companies, followed by Vienna (18) and Graz (8).

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 777 verified decision-maker contacts tracked across these 127 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 127 legacy system modernization firms based in Austria. Start with a free account, no credit card.

Download this list →

Related lists

Legacy system modernization firms 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.