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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,089 companies indexed · Last updated: today
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17'505 companies found

OPES Entertainment GmbH Logo

OPES Entertainment GmbH 

Zug · Since 2015

The core activity of OPES Entertainment GmbH is the development and implementation of career strategies, particularly for women, with the aim of supporting them in their professional development and achieving their goals.

Coaching & Personal Development
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OPINOMIC AG Logo

OPINOMIC AG 

Zug · Since 2023

The company OPINOMIC AG is a specialized publisher focusing on the creation of economic specialist publications with well-researched articles and high-quality journalism. The core activity of the company includes the production of content such as specialist publications, corporate publishing, business round table video podcasts, and other media offerings that focus on economic and social issues.

Publishing
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Optima-Beratungsdienst GmbH Logo

Optima-Beratungsdienst GmbH 

Zug · Since 2023

The core activity of Optima Beratungsdienst GmbH is the processing of unprofitable capital market products, in particular life and pension insurance policies, through cooperation with law firms, pre-financiers and experts. The company supports customers in enforcing their claims and offers services such as pre-financing of the surrender value, financial mathematical analysis and monitoring of processing.

Management Consulting
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Optimal Contracts AG Logo

Optimal Contracts AG 

Zug · Since 2022

The core activity of Optimal Contracts AG is the development and application of Optimal Smart Contracts based on Artificial Intelligence (AI) and Blockchain technologies to ensure transparency, fairness, and efficiency in contracts and agreements. The company aims to solve the Principal-Agent problem by developing a systematic solution to the asymmetry of information between providers and recipients of products and services. This includes the development of Optimal DApps that run on the blockchain and are driven by Optimal Smart Contracts to enable fair and efficient contracts.

FinTech
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Optima Medical Swiss AG Logo

Optima Medical Swiss AG 

Zug · Since 2010

The core activity of Optima Medical Swiss AG is the development, manufacture and distribution of medical products, in particular eye care products such as eye drops, eye sprays and eye washes, as well as products for nasal and ear care. The company specializes in the production of private label products and also offers research funding and partnerships.

Chemical Industry
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Optimum Asset Management AG Logo

Optimum Asset Management AG 

Zug · Since 1982

The core activity of Optimum Asset Management is the provision of global asset management and financial services, including investment advice and asset management, particularly for high net worth individuals, families, companies and governments.

External Asset Management
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Optivision Jürg Neidhart Logo

Optivision Jürg Neidhart 

Zug · Since 1992

Optivision Jürg Neidhart produces graphic design and technical illustrations in vector format and supplies digital and print products. Services include corporate brochures, flyers, posters, newsletters, websites, media/data adaptation and practical workshops for Adobe Illustrator, InDesign and Photoshop.

Advertising Agencies
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Optos GmbH, Düsseldorf, Deutschland, Zweigniederlassung Zug Logo

Optos GmbH, Düsseldorf, Deutschland, Zweigniederlassung Zug 

Zug · Since 2008

The core activity of Optos is the development, manufacture and marketing of ultra-widefield imaging devices for ophthalmology, particularly for retinal imaging. These devices are distributed under the brand name "opto map" and are designed to help detect pathologies in the retina and protect vision.

Medical Technology Industry
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ORACTIVE SWISS AG Logo

ORACTIVE SWISS AG 

Zug · Since 2021

The core activity of ORACTIVE Swiss AG is the development of 'Super Generics', i.e. innovative medicines based on established active pharmaceutical ingredients (APIs), specifically designed to combat modern lifestyle diseases.

Pharmaceutical Industry
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Orchard Therapeutics (Switzerland) GmbH Logo

Orchard Therapeutics (Switzerland) GmbH 

Zug · Since 2021

Research & DevelopmentPharmaceutical Industry
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Oread GmbH Logo

Oread GmbH 

Zug · Since 2009

The core activity of Oread is the development, manufacture and distribution of products for the containment, control and cleaning of oil and chemical spills, in particular oil absorbents, oil barriers, emergency kits and other products for hazardous substance storage and disposal.

Sustainability Sector
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Orion Innovation AG Logo

Orion Innovation AG 

Zug · Since 2016

Orion Innovation AG provides digital transformation services including digital strategy, experience design, software engineering, cloud and cybersecurity, as well as data & analytics and generative AI, and develops platforms and software products for industries such as telecommunications, financial services, healthcare, industrial and sports & entertainment.

IT Consulting & Services
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Oritain GmbH Logo

Oritain GmbH 

Zug · Since 2018

Oritain GmbH provides forensic origin verification of products and raw materials by combining analytical techniques (isotopes, trace elements, non‑traditional isotopes), statistical modelling and a global reference database. It operates a network of accredited laboratories and offers testing and data services for use cases including product origin verification, supply‑chain risk management, forced‑labor compliance and deforestation/sustainability reporting.

Testing & Inspection Centers
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Oros GmbH Logo

Oros GmbH 

Zug · Since 2008

The OROS Group primarily focuses on the analysis and measurement of vibrations, noise and structural dynamics in various industries such as aerospace, automotive, energy and process industries, precision engineering and marine. They offer solutions and services including sound source localization, psychoacoustics, building acoustics, impulse hammer testing, operating deflection shape analysis, modal analysis and quality and process control.

Technical Consulting & Engineering
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OrthoGraph GmbH Logo

OrthoGraph GmbH 

Zug · Since 2022

The core activity of OrthoGraph is the development and provision of software solutions for the digital capture, management and optimization of building and plant data, particularly in the area of facility management and industrial operations. The software enables customers to operate, maintain and optimize their facilities and buildings more efficiently by creating and managing an accurate digital representation of the physical infrastructure.

Software Development
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OSAGAU AG Logo

OSAGAU AG 

Zug · Since 2022

The core activity of OSAGAU is the trade in petroleum products, petrochemicals and products for drilling oil and gas wells. This includes in particular the trade in diesel fuel, gasoline, jet fuel (Jet A1 - RT) and other petrochemical products. The company also offers logistics, financial and risk management services to its customers.

Wholesale - Fuels & Petroleum Products
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OSM GmbH Logo

OSM GmbH 

Zug · Since 2019

OSM GmbH specializes in façade construction using glass, metal and wood. The company delivers façade projects in Switzerland and elsewhere in Europe and collaborates with European firms.

Joinery
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OSS Odau Solutions & Services GmbH Logo

OSS Odau Solutions & Services GmbH 

Zug · Since 2014

The core activity of OSS Odau is the consulting, implementation and training of SAP systems, particularly in the finance area (SAP Financials), as well as the automation of banking processes and payment transactions. The company offers services such as coaching, enhancements, implementations, migrations, reorganizations, rollouts and training for SAP systems, especially for the modules FI-AP, CO-OM, S/4HANA Finance and Bank Communication Management.

IT Consulting & ServicesSoftware Development
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O'Sullivan Montagen Logo

O'Sullivan Montagen 

Zug · Since 2009

O'Sullivan Montagen specializes in high-quality façade construction in glass, metal and wood and carries out installation work on building envelopes. The company undertakes projects across Europe and cooperates with specialist façade contractors.

Metal Construction
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OTI Greentech Innovative Solutions AG Logo

OTI Greentech Innovative Solutions AG 

Zug · Since 1992

OTI Greentech Innovative Solutions AG provides sustainable cleaning, separation, recovery and decontamination solutions and services. The company supplies products and services for the maritime, infrastructure and oil & gas industries.

Holding Companies
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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.