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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,805 companies indexed · Last updated: today
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2'109 companies found

Radiotherapie Hirslanden AG Logo

Radiotherapie Hirslanden AG 

Aarau · Since 2005

Hospitals & Clinics
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Raiffeisenbank Aarau-Lenzburg Genossenschaft Logo

Raiffeisenbank Aarau-Lenzburg Genossenschaft 

Aarau · Since 1925

Banks
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Rast GmbH Logo

Rast GmbH 

Aarau · Since 2014

Retail - Food & Luxury Items
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Reaktor AG Logo

Reaktor AG 

Aarau · Since 1998

The core activity of Reaktor AG is the creation of communication solutions for customers, including corporate design, campaigns, online marketing, websites, print, mailings and other forms of advertising and communication. The company positions itself as an advertising agency and communication agency that supports companies in the development and implementation of their communication strategy.

Advertising Agencies
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RED BOOTS AARAU AG Logo

RED BOOTS AARAU AG 

Aarau · Since 2022

The company's core activity is the operation of a women's football club, specifically the organization and execution of football matches and training sessions for various teams, including the first team, U20, U18, U16 and U14, as well as the promotion of young talent and the management of the club.

Sports Clubs (Professional)
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Restaurant Altstadt GmbH Logo

Restaurant Altstadt GmbH 

Aarau · Since 2002

Restaurant Altstadt GmbH is a restaurant offering Swiss, Indian and Chinese/Asian cuisine, providing take-away and party catering services; the establishment also includes a bar and designated smoking areas.

Restaurants
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Restaurant Halde 20, Tipu Sultan Bepari Logo

Restaurant Halde 20, Tipu Sultan Bepari 

Aarau · Since 2018

The company's core activity is gastronomy, specifically the operation of a restaurant offering authentic Bangladeshi cuisine. The company also provides take-away and delivery services.

Restaurants
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Restructuring Consulting GmbH Logo

Restructuring Consulting GmbH 

Aarau · Since 2003

The core activity of Restructuring Consulting GmbH (RC GmbH) is to advise and support national and international companies in the areas of restructuring, reorganization and succession planning. This includes in particular: Crisis management and restructuring consulting, Interim Management (taking over leadership positions such as CEO, CFO, COO, CRO), Restructuring consulting and management, Succession planning and support in corporate succession, Consulting in matters of corporate law, contract law and tax law, Support in the creation of new strategic business units. The company positions itself as a specialist in solving complex problems and challenges that go beyond the normal scope of consulting time.

Management Consulting
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Retas Schema AG Logo

Retas Schema AG 

Aarau · Since 1991

The core activity of Retas Schema AG is the planning, execution and commissioning of control and regulation technology for heating, ventilation and air conditioning (HVAC) systems as well as building automation. This includes in particular: creation of electrical schematics and software, delivery and installation of control and field devices as well as switchgear, commissioning and troubleshooting of systems, consulting and execution of projects in the field of HVAC and building automation. The company offers its services primarily for medium-sized and smaller projects in the Swiss Plateau region.

Specialized Construction Installations
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ReTrainEd GmbH Logo

ReTrainEd GmbH 

Aarau · Since 2022

ReTrainEd GmbH offers practice-oriented continuing-education courses for occupational therapists and physiotherapists focused on hand rehabilitation. Courses combine theoretical and practical components and cover topics such as strength training for the upper limb and post-operative management of flexor tendon injuries, taught by specialists in hand therapy and rehabilitation science.

Continuing Education Institutes
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RGS Bahnsicherheitstechnik AG Logo

RGS Bahnsicherheitstechnik AG 

Aarau · Since 2005

The core activity of RGS-Bahnsicherheitstechnik AG is the planning, manufacturing, installation and maintenance of railway safety technology, in particular level crossings and switches, as well as the provision of services such as design, testing and documentation in the field of railway safety technology.

Transport Infrastructure Companies
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Risk&Safety AG Logo

Risk&Safety AG 

Aarau · Since 2001

Risk&Safety AG is a consulting company specializing in risk management in the fields of construction, technology, and organization. The core activities include: Hazard and risk analyses, Fire protection and explosion protection, Earthquake safety and structural safety, Natural hazards and infrastructure safety, Emergency organization and crisis management, Safety management and emergency preparedness, Occupational safety and training, Research and development in the field of safety and risk management. The company provides independent consulting and supports customers in developing solutions for complex safety and risk problems.

Technical Consulting & Engineering
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Rizzo Treuhand GmbH Logo

Rizzo Treuhand GmbH 

Aarau · Since 2022

The core activity of Rizzo Treuhand GmbH is the provision of services in the areas of financial consulting, tax consulting and trust services. This includes in particular: Trust consulting and support, Tax consulting and planning for private households and companies, Financial consulting and planning, including financial management, Accounting and digital archiving of documents, Co-address service for companies, Support in the founding of companies. The company thus offers comprehensive services in the areas of financial and tax consulting and supports customers in managing their finances and meeting their tax obligations.

Fiduciary Offices
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Robert Hauri GmbH Logo

Robert Hauri GmbH 

Aarau · Since 1998

The core activity of Robert Hauri GmbH is the caretaking of multi-family houses, including cleaning and maintenance of properties on behalf of owners and property management companies.

Facility Management & Cleaning
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Robucci & Schär GmbH Logo

Robucci & Schär GmbH 

Aarau · Since 2022

The company offers coaching services for job seekers, particularly in the areas of application strategy, self-awareness, profile creation and assessment. The core activity consists of individual accompaniment and support of persons in their job search, in order to improve their chances on the labor market.

Coaching & Personal Development
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Rolf H. Meier Mediation und Beratung Logo

Rolf H. Meier Mediation und Beratung 

Aarau · Since 2021

The core activity of the company 'Rolf H. Meier – Mediation and Consulting' consists of providing services in the fields of mediation, consulting and coaching, particularly in the areas of: * Owner support and cooperation models * Conflict prevention and conflict resolution * Communication and participation procedures * Coaching and leadership. The focus is on supporting companies and organizations in managing complex projects, conflicts and change processes.

Coaching & Personal DevelopmentManagement Consulting
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Rothpletz, Lienhard + Cie AG Logo

Rothpletz, Lienhard + Cie AG 

Aarau · Since 1947

Rothpletz, Lienhard + Cie AG is a construction company and engineering firm that provides planning, construction and project-accompanying services for infrastructure projects. Its offerings include project engineering, civil and tunnel construction, pneumatic crane and transport services, and in-house equipment and workshop management.

Civil Engineering Firms
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RP Architekten AG Logo

RP Architekten AG 

Aarau · Since 1981

RP Architekten AG plans and delivers new-build projects and carries out renovation and conversion works on existing properties. The firm provides construction management, client-trustee services, general construction consulting and project development for multi- and single-family homes, commercial buildings and public buildings.

Architecture Firms
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Rudolf Fasler Aarau AG Logo

Rudolf Fasler Aarau AG 

Aarau · Since 1990

The core activity of Rudolf Fasler Aarau AG encompasses three main areas: 1. **Trust Services**: The company provides trust services, including financial accounting, payroll accounting, preparation of annual accounts, payroll administration, VAT declarations, and tax returns. 2. **Estate Liquidations and Consulting**: The company supports the liquidation of estates, including the settlement of estate debts, the distribution of legacies, and the division of the estate according to the instructions of the deceased or as prescribed by law. 3. **Executor Services**: The company offers executor services, including the settlement of estate debts, the distribution of legacies, and the division of the estate according to the instructions of the deceased or as prescribed by law. Overall, the core activity of the company can be described as comprehensive services in the field of estate administration and liquidation, including trust and consulting services.

Fiduciary Offices
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SaLü Treuhand AG Logo

SaLü Treuhand AG 

Aarau · Since 2011

The core activity of Salü Treuhand AG is the provision of trust services, including accounting, tax consulting and other related services.

Fiduciary Offices
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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.