Country ranking

Top B2B Companies in Austria

TrustList ranks 277 companies in Austria across 9 categories. The biggest lists are IT service providers (102), IT product companies (87) and software development companies (26). Each list below is the top of its full ranking, ordered by rating, review volume and listing quality; no one pays for a position.

The businesses here list work in Vienna, Salzburg and Linz. 260 of them have written a profile you can read before you get in touch.

What to check before you hire in Austria

Which legal entity signs, and which country's courts the contract names, since the office you met may not be the company on the invoice
Where your data will actually be stored and processed, and whether that is allowed under the rules you are bound by
Who owns the work: intellectual property assignment has to be valid under the law of the supplier's country, not only yours
The overlap in working hours you will really get, and who is reachable when something breaks at your end of the day
The currency you are billed in, who carries the exchange-rate movement, and what the payment fees add
References from clients in your own market, not only in the supplier's: the ones who had to manage the distance
How the relationship ends: notice, handover of code, credentials and data, and what happens to staff assigned to you

Each section below is the top of that category's own ranking for Austria, so the two pages can never disagree. At the top of the largest of them, IT service providers, right now: Qualysoft, NTS Netzwerk Telekom Service AG and Devoteam Alegri GmbH.

Top IT service providers in Austria

Top 5 of 102 ranked

See all 102

Q
Qualysoft
ERP Software Development · Custom Software Development · Microsoft Dynamics 365
Austrian IT consultancy and software engineering firm serving finance, energy, industry, telecoms and public sector clients
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Why #1: Based in nine international sites, including Vienna, Munich, Zurich, Budapest, Bucharest… · Founded 1999 · Team of 350+ · Client numbers stated on its own website, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
NTS Netzwerk Telekom Service AG
IT Services · Web Development · Web Design
NTS Netzwerk Telekom Service AG is an IT service company founded in 1995 by Alexander Albler and Hermann Koller. Its head office is in Grambach near Graz.
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Why #2: Based in Graz, Vienna, Linz, Innsbruck and Bolzano · Founded 1995 · Team of 100+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Devoteam Alegri GmbH
IT Services · iOS App · Software Development · Also in Germany
Devoteam Alegri GmbH was formerly known as Alegri International Group, an IT consultancy concentrating on Microsoft products.
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Why #3 (shared): Based in Munich (headquarters), Stuttgart, Mannheim, Frankfurt, Cologne, Hamburg, Vienna… · Founded 2001 · Team of 225+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Ontec AG
IT Services · Web Development · Web Design
Ontec AG is an IT service provider based in Vienna, set up in 2001 as a separate company within the TEC Group.
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Why #3 (shared): Based in Vienna · Founded 2001 · Team of 100+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Melon
Custom Software Development · Web Development · Web Design · Also in Bulgaria
Melon is a software development company established in 2003. It builds web, mobile and desktop applications by assembling teams around a range of technology platforms.
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Why #5: Office in Austria · Founded 2003 · Team of 150+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.

Top IT product companies in Austria

Top 5 of 87 ranked

See all 87

INVARIS Informationssysteme GmbH
IT Services · Web Development · Web Design
INVARIS Informationssysteme GmbH develops standard software for output management.
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Why #1: Based in Eisenstadt, Austria · Founded 1986 · Team of 50+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Meister
IT Services · Web Development · Web Design · Also in Germany
Meister is a software company headquartered in Vienna, Austria. It builds web-based productivity tools that help individuals and teams move from a rough idea to finished work.
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Why #2: Based in Vienna, Austria · Founded 2006 · Team of 60+, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
CG
COPS GmbH
IT Services · Web Development · Web Design
COPS GmbH supplies consulting and software for financial institutions and corporate treasury teams.
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Why #3: Based in a Vienna team is mentioned · Founded 1979, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Ramsauer & Stürmer Software Gmbh
IT Services · Web Development · Web Design
Ramsauer & Stürmer Software GmbH is an Austrian maker of the rs2 ERP system. Its site now carries the Aptean Austria name.
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Why #4: Based in Austria · Founded 1984 · Owner-managed, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
GAMED mbH
IT Services · Web Development · Web Design
GAMED mbH develops software for lean production and for improving production processes, and has done so since 1985.
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Why #5: Based in Harter Straße 48, Graz, Steiermark, AT, 8053 · Founded 1985, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.

Top software development companies in Austria

Top 5 of 26 ranked

See all 26

EC
Evolit Consulting GmbH
Artificial Intelligence - AI · IT Services · Web Development
Evolit Consulting GmbH is a Vienna software company that builds custom software and supports it through its whole life.
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Why #1: Based in Vienna, Austria · Founded 2011 · ISO 9001 · Team of 150+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Netcetera
IT Services · Web Development · Web Design · Also in Switzerland
Netcetera is a Swiss software company, now presented as G+D Netcetera, that builds products and custom software for banks and payment providers.
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Why #2: Office in Austria · Founded 1996 · Team of 590+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Specific-Group Software Solutions
Mobile App Development · Web Development · Web Design · Also in United States of America
Austrian IT consultancy and software developer covering cloud, security, AI, mainframe and IT staffing for large organisations
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Why #3: Based in Austria · In business 25+ years · Owner-managed, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Informance
Big Data · Java · ERP
Informance GmbH is an IT services and software company headquartered in Wien.
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Why #4: Based in Wien · Founded 2002, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
epoint.digital
Information Technology · eCommerce · Medical
epoint.digital is a digital agency with offices in Wien, Düsseldorf and Zürich.
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Why #5: Based in Wien, Düsseldorf and Zürich · In business 20+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.

Top digital marketing companies in Austria

Top 5 of 18 ranked

See all 18

itweb
Social Media Marketing · SEO · Responsive
itweb is a full-service web agency in Wien, active since 2011.
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Why #1: Based in Wien · Founded 2011 · Google partner, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
seso media group gmbh
Social Media Marketing · IT Services · Web Development
seso media group gmbh is a Vienna agency founded in 2000. Its team of about 40 works for clients around the world, combining analysis, strategy and communication design across…
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Why #2: Based in Vienna, Austria · Founded 2000 · Team of 40+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Euro Media Agency
Euro Media Agency, also called EMA, is an independent media representative based in Austria.
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Why #3: Based in Austria · In business 20+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
ncm.at
Social Media Marketing · IT Services · Digital Marketing
ncm.at is a digital agency in Salzburg, Austria, that concentrates on tourism and hotels.
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Why #4: Based in Salzburg, Austria · Team of 25+ · Project numbers stated on its own website, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
LA
luna agency
Social Media Marketing · IT Services · Digital Marketing
luna agency is an international campaign agency that has been operating since 2002.
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On record: Founded 2002, as stated on its own website, read 5 Oct 2026

Top business service companies in Austria

Top 5 of 17 ranked

See all 17

WI
willhaben internet service GmbH & Co KG
IT Services · Web Development · Web Design
willhaben internet service GmbH & Co KG runs willhaben, an online classifieds marketplace in Austria.
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Why #1: Based in Vienna, Austria · Founded 2006 · Team of 340+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
CG
Compass-Gruppe
IT Services · Web Development · Web Design
Compass-Gruppe is an Austrian business information provider. It began in Vienna in 1867 as Compass-Verlag, a publisher of address books, and launched its first internet database in…
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Why #2: Based in Vienna, Austria · Founded 1867 · Owner-managed, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
OBSERVER Media Intelligence
Social Media Marketing · Media & Entertainment · IT Services
OBSERVER Media Intelligence is a Vienna-based family-owned company that watches and analyses media coverage for its customers.
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Why #3: Based in Vienna, Austria · Founded 1896 · Family-owned, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
e+o meeting
Production · Creative · Travel · Also in Linz and Vienna
e+o meeting is a Vienna-based full service meeting, event and destination management company that organises high profile business events and travel programmes.
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Why #4: Based in Vienna, Austria · Founded 1984, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.
Iventa
Branding · Also in Frankfurt and Linz
Iventa is an HR services group in the DACH region, covering Austria, Germany and Switzerland.
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Why #5: Office in Austria · Founded 1991, as stated on its own website, read 9 Oct 2026
Not yet on record: client reviews, vetting.

Top artificial intelligence companies in Austria

Top 5 of 9 ranked

See all 9

EnliteAI GmbH
Artificial Intelligence - AI · IT Services · Web Development
EnliteAI GmbH works in artificial intelligence, from early strategy through prototypes to finished projects.
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Humai Technologies GmbH
Social Media Marketing · IT Services · Web Development
Humai Technologies GmbH develops artificial intelligence tools that extend what industrial staff can do.
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craftworks GmbH
Artificial Intelligence - AI · IT Services · Web Development
craftworks GmbH develops custom software that uses machine data and artificial intelligence to predict faults and quality problems in industrial plants.
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Swarm Analytics
Artificial Intelligence - AI · IT Services · Web Development
Swarm Analytics is an applied AI company headquartered in Innsbruck, Austria.
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Mostly AI
Artificial Intelligence - AI · IT Services · Web Development
Mostly AI makes software for creating synthetic data, which imitates real datasets without exposing the people in them.
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Top AR & VR development companies in Austria

Top 5 of 7 ranked

See all 7

Holo-Light
Artificial Intelligence - AI · IT Services · Software Development · Also in Munich
Holo-Light builds software for extended reality (XR) in industry, covering both augmented and virtual reality.
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ViewAR
Artificial Intelligence - AI · IT Services · Web Development
ViewAR supplies an augmented reality system for companies. It provides the infrastructure to create, manage, test and publish AR applications, so clients do not need to assemble…
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innovation.rocks
Artificial Intelligence - AI · IT Services · Web Development
innovation.rocks is a full-service digital agency that designs, develops, produces and deploys augmented reality and virtual reality solutions for large organisations.
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Reactive Reality
Artificial Intelligence - AI · IT Services · Web Development
Reactive Reality has developed its own augmented reality engine that converts standard 2D photographs into detailed 3D models within minutes.
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Bytewood
Bytewood is a developer based in Wien of interactive software, 3D experiences and web applications.
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Top big data & BI companies in Austria

Top 5 of 6 ranked

See all 6

cubido business solutions gmbh
IT Services · Web Development · Web Design
cubido business solutions gmbh began with business intelligence and now trades as ACP CUBIDO Digital Solutions.
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Know-Center GmbH
IT Services · Web Development · Web Design
Know-Center GmbH is a research centre in Graz, Austria, working in data-driven business and big data analytics.
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Invenium Data Insights GmbH
IT Services · Web Development · Web Design
Invenium Data Insights GmbH is a big data analytics company that works with large volumes of movement data.
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InData GmbH
IT Services · Web Development · Web Design
InData GmbH is an IT consulting and software company based in Wien.
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EVRY
Machine Learning · Cloud · Automation · Also in Serbia
EVRY is a Nordic software and technology company with about 14,000 experts.
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Top cybersecurity companies in Austria

Top 5 of 5 ranked

See all 5

Noble CSS Ltd
Web Development · Web Design · Software Development
Noble CSS Ltd is a cyber security business. It says its mission is to free society from the burden of cybercrime, and it believes that protecting enterprises and protecting society…
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IKARUS Security Software GmbH
IT Services · Web Development · Web Design
IKARUS Security Software GmbH develops and runs IT and operational technology security products, starting from its own malware scan engine.
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SBA Research
IT Services · Web Development · Web Design
SBA Research is an information security research centre in Vienna, Austria.
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RC
Radar Cyber Security
IT Services · Web Development · Web Design
Radar Cyber Security is a European technology company specialising in detection and response.
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CS
CYBERTRAP Software GmbH
IT Services · Web Development · Web Design
CYBERTRAP Software GmbH makes security software built on deception technology.
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For vendors

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How is this ranking worked out?

A position here is earned, never bought. It is worked out from what a firm publishes and what has been verified about it:

Profile completeness: the details a buyer needs to judge a firm: what it does, who it serves, how it prices, who it has worked for
Earned trust: verification, awards and the other checks a firm has actually passed
Client reviews, where they exist: the rating is smoothed, so one five-star review cannot outrank a firm with a hundred good ones, and volume counts with diminishing returns

Be clear about the third one: client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.

No firm can pay for a position. Sponsored listings are labelled and shown apart from this list. How rankings work

Where else can I look in Austria?

Every category ranked here has its own full list: IT service providers (88), IT product companies (77) and software development companies (21). Or compare countries from the country index.

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