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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,794 companies indexed · Last updated: today
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1'653 companies found

Genossenschaft Alters- und Pflegeheim Stadtpark Logo

Genossenschaft Alters- und Pflegeheim Stadtpark 

Olten · Since 1978

The company operates a nursing home with various services, including housing, care and nursing, activation and gastronomy (restaurant, catering, rooms).

Nursing Homes
View profile3.6(5)
Hagmann Gartenbau AG Olten Logo

Hagmann Gartenbau AG Olten 

Olten · Since 1998

Hagmann Gartenbau AG Olten provides garden construction, garden maintenance and retail of garden products. Services include annual maintenance, lawn and tree care, hedge trimming, and a garden centre offering plants, tools, plant containers and garden sculptures.

Horticulture & Landscaping
View profile3.4(5)
HEMA Modelleisenbahnen Markus Heim Logo

HEMA Modelleisenbahnen Markus Heim 

Olten · Since 2011

The core activity of HEMA-Modellbahnen is the sale and purchase of model railway items. The company operates a store in Olten, offering a wide range of model railway items, and also sells articles through the online platform Ricardo. Additionally, it offers the purchase of model railway collections.

Retail - General Specialty Trade
View profile3.2(5)
KFB Pfister AG Ingenieure und Planer Logo

KFB Pfister AG Ingenieure und Planer 

Olten · Since 1999

KFB Pfister AG is an engineering firm specializing in the planning and realization of construction projects. The core activities include: Spatial planning: development of concepts and plans for the use of space and area. Civil engineering: planning and realization of infrastructure projects such as roads, bridges, tunnels, and other underground structures. Structural planning: development of load-bearing structures in various materials such as reinforced concrete, steel, wood, and natural stone. Project management: taking over the overall management and coordination of construction projects to ensure that they are completed on time, within budget, and with the required quality. The company thus offers comprehensive services for the planning, realization, and monitoring of construction projects.

Civil Engineering FirmsConstruction & Project ManagementOwner's Representative
View profile5(5)
Leni Adam GmbH Logo

Leni Adam GmbH 

Olten · Since 2020

The core activity of Leni Adam is the manufacture and sale of sustainable, luxurious jewelry, particularly featuring Swiss precious stones, made in Switzerland.

Jewelry & Precious Metal Manufacturing
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Neosys AG Logo

Neosys AG 

Olten · Since 2001

The company provides consulting and services in the areas of environmental protection, sustainability and risk management. The core activities include: Environmental and energy consulting, Life cycle assessments and sustainability reporting, Occupational hygiene and indoor pollutants, Social responsibility and sustainable development, Compliance and risk management, particularly in the area of international guidelines and laws (e.g. human rights, child labor). The company supports companies and organizations in the implementation of sustainability strategies and compliance with environmental and social standards.

Management ConsultingTechnical Consulting & Engineering
View profile5(5)
Orthopädietechnik Willi Wyss Logo

Orthopädietechnik Willi Wyss 

Olten · Since 1988

The company's core activity is the manufacture of orthopedic shoe insoles and the operation of an orthopedic store where customers can drop in without an appointment to access orthopedic products and services.

Medical Technology Industry
View profile3.4(5)
Podologiepraxis Ulrich GmbH Logo

Podologiepraxis Ulrich GmbH 

Olten · Since 2020

The core activity of the company "Podologiepraxis Ulrich" is medical foot care, particularly podological treatment of foot problems. The company offers various services in this area, such as medical foot care, foot care tips and consultation. It is a private practice that cannot be billed through basic health insurance, but is partially reimbursed through supplemental insurance.

Non-Medical Healthcare Professions
View profile3.8(5)
Riggenbach AG, Lüftungs- und Klimatechnik Logo

Riggenbach AG, Lüftungs- und Klimatechnik 

Olten · Since 1991

Riggenbach AG, Lüftungs- und Klimatechnik designs, constructs and services complete ventilation, air‑conditioning, refrigeration and energy systems. Its offerings include engineering, in-house sheet‑metal production, installation, building automation and maintenance with a 24-hour service line.

Plumbing & Building Services
View profile4.6(5)
Willy Schneider AG Logo

Willy Schneider AG 

Olten · Since 2013

The company's core activity is metal processing, particularly the manufacture of metal parts and semi-finished products for the construction and industrial sectors, including technical insulation for heat, cold and sound protection as well as special custom-made products.

Metal Industry
View profile4(5)
Zhou Wei, Traditionelle Chinesische Medizin Logo

Zhou Wei, Traditionelle Chinesische Medizin 

Olten · Since 2010

The company's core activity is the provision of medical services in the field of Traditional Chinese Medicine (TCM), including acupuncture, herbal medicine and other TCM therapies. The company operates a practice in Olten, Switzerland, and offers consulting and treatment for various health problems, such as pain, rheumatism, diabetes, burnout syndrome and others.

Naturopathic Clinics
View profile4.2(5)
AfA Recruitment & Services GmbH Logo

AfA Recruitment & Services GmbH 

Olten · Since 2017

The company's core activity is the placement and provision of skilled workers and auxiliary staff to companies, particularly in the industrial sector. The company offers personnel placement services, focusing on the placement of permanent positions as well as all aspects of temporary work.

Recruitment & HR Consulting
View profile5(4)
Al-Anon-Familiengruppen Logo

Al-Anon-Familiengruppen 

Olten · Since 1990

The core activity of Al-Anon is providing self-help groups and support for relatives and friends of alcoholics to help them cope with the effects of alcoholism on their own lives.

NGOs & NPOs
View profile3.8(4)
Bachmann AG Olten Logo

Bachmann AG Olten 

Olten · Since 2020

The core activity of BACHMANN AG OLTEN is the execution of chimney sweep work, furnace inspections and fire protection measures for oil, gas and wood heating systems, tile stoves, fireplaces, steam boilers and pizza ovens in the Olten region.

Building Maintenance
View profile4.8(4)
BI Samurai GmbH Logo

BI Samurai GmbH 

Olten · Since 2016

The company BI Samurai Ltd. offers services and products in the field of Business Intelligence (BI), particularly in connection with Microsoft Power BI. The core activities include: Consulting and support for the implementation and use of Power BI; Development and distribution of customized visualizations and add-ins for Power BI; Training and training for Power BI users; Creation of reporting solutions with Zebra BI; Performance optimization and analysis of Power BI systems. The company also offers specialized services such as the creation of customized visualizations, the development of Power BI models, and the conduct of workshops and training sessions.

IT Consulting & Services
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Conz Treuhand AG Logo

Conz Treuhand AG 

Olten · Since 1987

The core activity of Conz Treuhand AG is the provision of trust services, particularly in the areas of auditing, tax consulting, accounting, business consulting, and property management. The company supports and relieves its clients in these areas, enabling them to focus on their core business.

Fiduciary OfficesProperty ManagementReal Estate Brokerage
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Eisenbahner-Baugenossenschaft Flügelrad - Olten Logo

Eisenbahner-Baugenossenschaft Flügelrad - Olten 

Olten · Since 1953

The company EBG Flügelrad Olten is primarily engaged in the management and rental of real estate, particularly apartments and parking spaces in the regions of Olten, Hägendorf and Trimbach.

Property Management
View profile4.5(4)
EZO Gesundheitszentrum GmbH Logo

EZO Gesundheitszentrum GmbH 

Olten · Since 2022

EZO Gesundheitszentrum GmbH provides Traditional Chinese Medicine (TCM) services with a focus on acupuncture and herbal therapy. The practice also offers auricular acupuncture, cupping (including blood cupping), five‑element nutritional counseling, intolerance testing and care for conditions such as Long‑COVID, musculoskeletal, neurological and psychosomatic complaints.

Naturopathic Clinics
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FACTO AG Logo

FACTO AG 

Olten · Since 1981

The core activity of FACTO AG is the development, design and production of braking systems and pneumatic components for rail vehicles, particularly for the rail industry. The company offers its own products and those of renowned foreign manufacturers, and supports customers in the maintenance, revision and availability of their vehicles.

Research & DevelopmentMechanical Engineering Industry
View profile4.8(4)
Informatikschule Olten GmbH Logo

Informatikschule Olten GmbH 

Olten · Since 2008

The company's core activity is the education and training of IT professionals, particularly in the areas of application development, platform development, and ICT specialist EFZ. The company provides a solid school-based foundation and practical training to prepare students for the job market.

Vocational & Secondary Schools
View profile5(4)
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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.