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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
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3'325 companies found

Bergfäscht GmbH Logo

Bergfäscht GmbH 

Zurich · Since 2017

Trade Fair & Event OrganizersWeb Portals & Platform Companies
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TK CONSULT AG Logo

TK CONSULT AG 

Zurich · Since 1995

The core activity of TK CONSULT AG is numerical modeling in the field of hydrogeology and hydraulics, particularly in the calculation of groundwater flow and the simulation of hydraulic and morphological processes in surface waters.

Technical Consulting & Engineering
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TNC Consulting AG Logo

TNC Consulting AG 

Zurich · Since 1994

TNC Consulting AG provides consultancy, planning and project support for photovoltaic systems and offers services on building energy efficiency. Activities include project development (alpine PV, agri‑PV, floating PV), PV system planning and operation, PV noise‑barrier solutions, and measurement/analysis services.

Solar & Photovoltaics
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Topotek 1 Architektur GmbH Logo

Topotek 1 Architektur GmbH 

Zurich · Since 2017

Topotek 1 is an architectural firm specializing in the planning and realization of construction projects. The company's core activities encompass the areas of architecture, landscape architecture, design, and construction. The company offers services such as design, planning, and implementation of construction projects and is involved in various projects, including buildings, landscapes, and urban developments.

Architecture Firms
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Tosoo AG Logo

Tosoo AG 

Zurich · Since 2020

The core activity of Tosoo AG is the development and manufacture of portable sleep devices, in particular a sleep headband equipped with EEG sensors, aimed at improving sleep quality. The company combines expertise from the fields of neurology, sleep science, textile design and software development to develop innovative solutions for improving sleep quality.

Medical Technology Industry
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townset GmbH Logo

townset GmbH 

Zurich · Since 2016

The core activity of TownSet GmbH is the consulting and development of sustainable urban planning projects, including the creation of feasibility studies, master plans and the implementation of projects in the field of urban development. The company also offers innovative solutions for the development of Smart Cities, the renovation of historic cities and the upgrading of informal settlements in dense cities.

Technical Consulting & Engineering
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trafit solutions gmbh Logo

trafit solutions gmbh 

Zurich · Since 2009

The core activity of trafIT solutions gmbh is the development of software solutions and services for public transportation, particularly for the rail industry. The activities include: development of software products such as OnTime, railOscope, OpenTrack Hub and Components; software development, project management, conception, realization, deployment and operation; research and consulting in the areas of process analysis, conception and planning, timetable optimization and data management; data analysis, reporting and mining as well as data quality management; algorithmic decision support for the construction of periodic railway timetables. The company specializes in the efficient handling of large data volumes and mathematical optimization in the context of public transportation.

IT Consulting & ServicesSoftware Development
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Trägerorganisation für die Berufsprüfung für Treuhand und Beratung Logo

Trägerorganisation für die Berufsprüfung für Treuhand und Beratung 

Zurich · Since 2002

Trägerorganisation für die Berufsprüfung für Treuhand und Beratung is the examination secretariat and portal for the federal professional examinations in the fiduciary (treuhand) sector. It coordinates exam regulations and admission requirements, publishes information on qualifications and examinations, and provides registration forms and downloadable resources.

Professional & Trade Associations
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Trägerorganisation für die Höhere Fachprüfung Treuhand Logo

Trägerorganisation für die Höhere Fachprüfung Treuhand 

Zurich · Since 2002

Trägerorganisation für die Höhere Fachprüfung Treuhand is an organization that oversees the administration of the higher professional examination in the fiduciary sector and defines admission requirements, curricula, qualification procedures and certificates. According to the website, the sponsoring bodies include TREUHAND|SUISSE and the Kaufmännischer Verband Schweiz.

Professional & Trade Associations
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Tramli GmbH Logo

Tramli GmbH 

Zurich · Since 2023

Tramli GmbH sells a USB-powered device that displays real-time departure times for trams, buses and trains at Swiss public-transport stops. The device connects via 2.4 GHz Wi‑Fi, uses GTFS data from Opentransportdata for live schedules, has a PMOLED screen and no internal battery, and is configured through a web application using the device's serial number.

Manufacture of IT HardwareSoftware Development
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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.