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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,173 companies indexed · Last updated: today
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Citywinterthur
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7'410 companies found

Planta Projektmanagement-Systeme GmbH Logo

Planta Projektmanagement-Systeme GmbH 

Winterthur · Since 1996

The company PLANTA develops and distributes project management software that supports companies in the efficient planning and control of projects. The software offers functions such as scheduling, resource management, cost planning, task management, project controlling and project portfolio management. The company offers various editions of its software and supports customers in the implementation and use of the software through consulting, training and workshops.

IT Consulting & ServicesSoftware Development
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Plättlibau GmbH Logo

Plättlibau GmbH 

Winterthur · Since 2008

Flooring & Tiling
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Power Security, Eugen Hallauer Logo

Power Security, Eugen Hallauer 

Winterthur · Since 1996

The core activity of Power Security Group encompasses security services, particularly: object protection, logistics, valuables protection, data protection, and fire safety consulting. The company provides comprehensive consulting in the security sector and coordinates security measures to minimize hazards and risks in private and public spaces.

Security Services
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PPZ Leonhardt Logo

PPZ Leonhardt 

Winterthur · Since 2002

Continuing Education Institutes
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Praxis für Psychotherapie Dr. phil. Marianne Steiner Logo

Praxis für Psychotherapie Dr. phil. Marianne Steiner 

Winterthur · Since 2022

The company's core activity is the provision of psychological psychotherapy services, particularly the treatment and support of individuals in various life situations, with the aim of reducing psychological distress and promoting self-determination and personal goals.

Psychiatry & Psychotherapy
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Priority Personal Training KlG Logo

Priority Personal Training KlG 

Winterthur · Since 2021

Sports & Recreation Instruction
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Problemli GmbH Logo

Problemli GmbH 

Winterthur · Since 2022

The company Problemli GmbH provides IT services and solutions, particularly in the field of computer science and problem solving, with the aim of supporting companies and customers in Winterthur and its surroundings in solving their IT problems and increasing their productivity.

IT Consulting & Services
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productiveNetwork GmbH Logo

productiveNetwork GmbH 

Winterthur · Since 2017

The core activity of productiveNetwork GmbH is the development and distribution of rack mount solutions for the energy industry, the transport sector and the telecommunications industry. The company offers customized solutions that enable customers to optimize their racks in terms of cost, space, durability and cooling.

IT Consulting & Services
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Prof. Reinigungen Günes Logo

Prof. Reinigungen Günes 

Winterthur · Since 2024

The core activity of the company "Prof Reinigungen" is the provision of cleaning services, painting work and waste disposal for companies and private individuals in the cantons of Zurich, Aargau, Zug and Schwyz.

Facility Management & Cleaning
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Pro Harmonia Mundi Logo

Pro Harmonia Mundi 

Winterthur · Since 1980

The core activity of the Pro Harmonia Mundi Foundation is the promotion of art and talented musicians.

Cultural & Educational Organizations
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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.