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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,089 companies indexed · Last updated: today
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1'683 companies found

Alpha Defence Capital AG Logo

Alpha Defence Capital AG 

Herisau · Since 2004

Alpha Defence Capital AG provides corporate consulting services and operates as a real estate broker. The company advises on national and international corporate and real estate markets, including site and strategy development.

Management ConsultingReal Estate Brokerage
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Alpha Heron AG Logo

Alpha Heron AG 

Herisau · Since 1992

The core activity of Alpha Heron AG is the provision of IT services, particularly in the areas of: * Development and implementation of software solutions (custom software) * Enterprise Content Management (ECM) * Backup and archiving of data (DataTrust) * Enterprise Resource Planning (ERP) with products such as europa3000 ERP and PPS4KMU * Mobile solutions (AHmobile) The company also offers consulting services to support customers in selecting and implementing software solutions.

IT Consulting & ServicesSoftware Development
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Alpha Holz GmbH Logo

Alpha Holz GmbH 

Herisau · Since 2016

The core activity of Alpha Holz GmbH is the planning, consulting and execution of construction and renovation work, particularly in the field of solid wood houses and buildings, using natural building materials such as wood and sheep's wool. The company also offers services in the areas of carpentry, joinery, furniture making and interior finishing.

Building MaintenanceInterior ConstructionTimber Construction & Carpentry
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alpstein-IT GmbH Logo

alpstein-IT GmbH 

Herisau · Since 2009

alpstein-IT GmbH is an IT service provider offering web hosting, domain registration, cloud services and web design (Joomla, WordPress). Its services also include messaging and groupware (e.g. MS Exchange), network design (switching/routing), high-availability solutions, firewalls, VPN, antivirus, wireless LAN and backup/data protection solutions.

IT Consulting & Services
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Ammann & Ehrbar Baumanagement AG Logo

Ammann & Ehrbar Baumanagement AG 

Herisau · Since 2019

Ammann & Ehrbar Baumanagement AG is a construction management company that provides project organisation, general planning, site supervision and cost and schedule management services.

Construction & Project Management
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Ammann & Ehrbar Holding AG Logo

Ammann & Ehrbar Holding AG 

Herisau · Since 2022

Ammann & Ehrbar Holding AG: The official website presents Ammann & Ehrbar Baumanagement AG as a provider of construction management services, including project organisation, project development/general planning, cost management, tendering and contract handling, site supervision, scheduling, quality assurance, defect management and property valuations.

Holding Companies
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Ammann & Ehrbar Immobilien AG Logo

Ammann & Ehrbar Immobilien AG 

Herisau · Since 2022

Ammann & Ehrbar Immobilien AG provides construction management and project management services, including project organisation, general planning, cost management, tendering and contract handling, construction supervision, quality assurance, defect remediation and property valuations.

Property Management
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Anlagebau Keller GmbH Logo

Anlagebau Keller GmbH 

Herisau · Since 2009

The core activity of Anlagebau Keller is the design, construction, maintenance and commissioning of machinery and equipment, including planning and engineering.

Mechanical Engineering Industry
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Appenzellerland Immobilien AG Logo

Appenzellerland Immobilien AG 

Herisau · Since 2016

The core activity of Appenzellerland Immobilien AG is the sale and rental of residential properties in the Appenzellerland region, particularly in the areas of Appenzellervorderland, Wienacht-Tobel and Luzenberg.

Property Management
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Appenzellerland Tourismus AG Logo

Appenzellerland Tourismus AG 

Herisau · Since 2009

The core activity of Appenzellerland Tourismus AG is the promotion and marketing of tourism in the Appenzellerland region. This includes catering to tourists, creating and distributing informational materials, organizing events, and collaborating with local partners. The company also offers services such as arranging accommodations, organizing group trips, and advising tourists.

Tourism Associations
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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.