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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,089 companies indexed · Last updated: today
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1'646 companies found

S+B Immobilien AG Logo

S+B Immobilien AG 

Olten · Since 2011

S+B Immobilien AG is a real estate company that focuses on project development and the realisation of property projects; it is part of the S+B corporate group.

Property Management
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SCHAFER Dienste GmbH Logo

SCHAFER Dienste GmbH 

Olten · Since 2006

Fiduciary Offices
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Schaffner Smart Solutions AG Logo

Schaffner Smart Solutions AG 

Olten · Since 2019

The company provides consulting and development services in the fields of energy, process technology and safety. The core activity includes the development of intelligent and sustainable solutions for the efficient and environmentally friendly production and use of energy, particularly in the area of renewable energies and decarbonization. This also includes advising customers on the implementation of energy projects, developing new processes and technologies, and supporting customers in adapting to legal and regulatory requirements.

Technical Consulting & Engineering
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schilling p2 ag Logo

schilling p2 ag 

Olten · Since 1999

The core activity of SchillingPartner Egerkingen is the provision of services in the field of construction and real estate, particularly in the areas of general planning, architecture, engineering and project management.

Real Estate Project Development
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Schmutz + Partner Energietechnik AG Logo

Schmutz + Partner Energietechnik AG 

Olten · Since 2024

Schmutz + Partner Energietechnik AG provides engineering services in energy technology, including heating system design, climate and cooling planning, and the preparation of energy performance certificates (Energienachweise and Minergie). Services also include underfloor heating design, energy consulting, MSRL planning and condition analyses.

Technical Consulting & Engineering
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Schmutz + Partner Brandschutz AG Logo

Schmutz + Partner Brandschutz AG 

Olten · Since 2023

Schmutz + Partner Brandschutz AG is an engineering and specialist planning firm for fire suppression systems and technical fire protection. Services include consulting, condition assessments, design and planning of gas, sprinkler and water‑mist systems, inspection and optimisation of existing installations, and project support through implementation.

Technical Consulting & Engineering
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Schmutz + Partner Gebäudetechnik AG Logo

Schmutz + Partner Gebäudetechnik AG 

Olten · Since 2024

Schmutz + Partner Gebäudetechnik AG is an engineering firm for building services that provides planning, consulting and specialist coordination in areas such as sanitary systems, sewer planning, water hygiene and 3D/BIM planning. The company carries out condition analyses and supports projects from consultation and design through implementation for residential, industrial, laboratory and hospital buildings.

Technical Consulting & Engineering
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Schmuziger Architekten AG Logo

Schmuziger Architekten AG 

Olten · Since 2001

The core activity of Klaus Schmuziger's company is architecture, specifically the planning and realization of buildings and urban development projects, complemented by graphic design and furniture design.

Architecture Firms
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schneiderSchmid landschaftsarchitektur und gartendenkmalpflege inhaber david schmid Logo

schneiderSchmid landschaftsarchitektur und gartendenkmalpflege inhaber david schmid 

Olten · Since 2018

The core activity of Schneider-Schmid Landschaftsarchitektur is the planning, design and development of open spaces, particularly in the field of landscape architecture and garden monument preservation. The company offers services such as spatial planning, design of public spaces, garden monument preservation, road and water space planning, as well as the development of sustainable and future-proof solutions for the use of open spaces.

Architecture Firms
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schulberatung.ch GmbH Logo

schulberatung.ch GmbH 

Olten · Since 2021

The core activity of Schulberatung.ch is the consulting and support of educational institutions, particularly schools, in the areas of organizational development, executive recruitment (headhunting) and talent management. This also includes services such as interim school management, life coaching and career coaching for executives in the education sector.

Management Consulting
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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.