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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,740 companies indexed · Last updated: today
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319 companies found

SemiVi GmbH Logo

SemiVi GmbH 

Zollikerberg · Since 2025

SemiVi GmbH develops software for simulation of semiconductor optoelectronic devices, offering tools such as a structure generator and mesher, an opto-solver (FDTD, BPM, mode solver), a drift-diffusion solver and a circuit solver. The products include support for hardware acceleration using modern graphics cards and are aimed at semiconductor researchers and device developers.

Research & DevelopmentSoftware Development
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Dynatom International Sàrl Logo

Dynatom International Sàrl 

Zollikerberg · Since 2014

The core activity of Dynatom International GmbH is to provide services to companies in various industries, particularly in the areas of energy, transportation, healthcare, and quantum technology. The services include business development, trade, market research, legal and technical services, as well as the development of artificial intelligence (AI) for cloud infrastructure and embedded systems. Dynatom positions itself as a strategic investor in the markets for nuclear, conventional, hydrogen, and renewable energies and offers its customers support in market development, localization of supply chains, mediation of business contacts, and legal and technical issues. The company is headquartered in Zurich, Switzerland, and is active in the regions of Asia, Latin America, the Middle East, and Africa.

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SENN-HOF Inh. M. Senn Logo

SENN-HOF Inh. M. Senn 

Zollikerberg · Since 2000

SENN-HOF Inh. M. Senn is a children's riding stable offering riding pedagogy and practical instruction in horse handling for young riders. Services include pony and riding courses, adventure pony camps, and riding-share arrangements, with activities on led Icelandic and small horses.

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Affinity Tax AG Logo

Affinity Tax AG 

Zollikerberg · Since 2022

The core activity of Affinity Group is comprehensive consulting and services in the areas of law and taxes, including: tax consulting for private individuals, legal entities and entrepreneurs; legal consulting in the areas of labor law, contract and corporate law, IP, advertising and competition law; data protection and technology; and consulting on trusts and foundations. The company thus offers a comprehensive range of legal and tax services for private individuals, companies and organizations.

Law Firms & Notary Offices
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GETHELP GmbH Logo

GETHELP GmbH 

Zollikerberg · Since 2002

Coaching & Personal DevelopmentManagement ConsultingRecruitment & HR Consulting
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hgm AG Logo

hgm AG 

Zollikerberg · Since 1974

Real Estate Brokerage
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SeraVitaCare GmbH Logo

SeraVitaCare GmbH 

Zollikerberg · Since 2024

SeraVitaCare GmbH provides personalised in‑home caregiving and basic nursing services for older adults, matching clients with vetted, regular caregivers. Services include daily living assistance, household support and companionship, with supplementary medical care provided in cooperation with Spitex or qualified nursing professionals and legally secured employment contracts.

Home Care Services
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pro-ro handling GmbH Logo

pro-ro handling GmbH 

Zollikerberg · Since 2024

Wholesale - General Specialty Trade
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refex gmbh immobilienservice Logo

refex gmbh immobilienservice 

Zollikerberg · Since 2011

Facility Management & CleaningProperty ManagementReal Estate Brokerage
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Relstom GmbH Logo

Relstom GmbH 

Zollikerberg · Since 2006

Advertising Agencies
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Sigmology GmbH Logo

Sigmology GmbH 

Zollikerberg · Since 2021

The core activity of Sigmology GmbH is to provide solutions and services in the areas of safety and system technology for companies. Specifically, this includes: Functional safety (e.g. hazard and operability analysis, failure mode and effects analysis, SIL verification), Industrial cybersecurity (e.g. protection of systems, secure product development), Model-based systems engineering (MBSE, e.g. SysML consulting and training, plugin development). The company supports customers in meeting their requirements in these areas and offers long-term, partnership-based relationships.

Technical Consulting & Engineering
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Simic Reinigungen Logo

Simic Reinigungen 

Zollikerberg · Since 2016

The core activity of Simic Reinigungen is the professional cleaning of various types of premises, including apartments, offices, medical practices and windows.

Facility Management & Cleaning
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Terra Patrol Security GmbH Logo

Terra Patrol Security GmbH 

Zollikerberg · Since 2024

Security Services
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terraqua engineering AG Logo

terraqua engineering AG 

Zollikerberg · Since 2019

The core activity of Terraqua Engineering AG is the planning, evaluation and monitoring of geotechnical and hydraulic structures, including foundations, underground constructions, dams, river dykes and other water retention facilities. The company also provides services in the field of risk assessment and minimization of natural hazards such as slope instabilities and rockfalls. Furthermore, Terraqua develops and implements innovative solutions for the monitoring and testing of geotechnical structures, including the use of fibre optic technology.

Technical Consulting & Engineering
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UNit AG Logo

UNit AG 

Zollikerberg · Since 2018

Holding Companies
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2E

2 Eichen GmbH 

Zollikerberg · Since 2010

Real Estate Project Development
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5G

5FLY GmbH 

Zollikerberg · Since 2014

Advertising Agencies
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AG

A1CH-Rep GmbH 

Zollikerberg · Since 2023

Other Service Industries
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AE

A.A. Entertainment GmbH 

Zollikerberg · Since 2011

Other Service Industries
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AE

Adequat Energy AG 

Zollikerberg · Since 2012

Private Equity & Venture Capital
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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?
The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.
How do keywords work?
Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.
What belongs in the postal code field?
A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.
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How is organisation size determined?
Size reflects the number of employees and is calculated from publicly available information by a model developed in-house. It is a best-possible estimate, not an official figure.
What does the Verified label mean?
Verified means the entry is tied to a UID (Swiss business identification number) and therefore links back to the official Swiss business register. The label speaks to the company's identity — it is not a rating of its performance.

Source: Federal Statistical Office, UID register

How do I sort the results?
Use the dropdown above the list: Relevance, Name (A–Z), Best rating, Most reviews or Longest established. You can also switch between list and map view and set how many results appear per page.