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Spillmann Immobilien AG 

Windisch · Since 2000

The core activity of Spillmann Immobilien AG is the rental and management of properties and apartments.

Stähli Energie 

Windisch · Since 2023

The core activity of Stähli Energie is independent and neutral energy consulting for new buildings and renovations.

stiftung fhnw 

Windisch · Since 2010

stiftung fhnw supports projects in research, development and teaching at the Fachhochschule Nordwestschweiz (FHNW). The foundation provides seed funding for early‑stage projects, awards grants and publishes information on donation and support options.

Stiftung Ortsmuseum Schürhof Windisch 

Windisch · Since 2013

The "Museum Schürhof" is a private museum whose core activity is to present and preserve the history of the Schürhof and the municipality of Windisch. It offers guided tours, exhibitions and events to inform and educate the public about the region's history and culture.

Stiftung zur Förderung der Fachhochschule Aargau für Technik, Wirtschaft und Gestaltung, Direktionsbereich Technik, Windisch 

Windisch · Since 1965

Stiftung zur Förderung der Fachhochschule Aargau für Technik, Wirtschaft und Gestaltung, Direktionsbereich Technik, Windisch supports research, development and teaching projects at the Fachhochschule Nordwestschweiz (FHNW) and provides seed funding to help early-stage projects qualify for industry collaboration or further funding.

SUHNER Liegenschaften AG 

Windisch · Since 2013

SUHNER Liegenschaften AG is a property services company providing property management, rental mediation, caretaking and garden maintenance for residential and commercial buildings. Its services cover administrative, technical and financial management such as lease administration, maintenance coordination, billing and support for property sales, and the company lists rental objects in several cantons.

Tebo AG 

Windisch · Since 2007

The core activity of Tebo AG is the marketing and distribution of products and services in the field of fluid management, particularly fuels, lubricants, AdBlue and operating equipment for petrol stations, as well as the construction and maintenance of oil facilities. Additionally, the company operates online shops and provides consulting services.

TepoTec Mavins Sàrl 

Windisch · Since 2014

THEBIT GmbH 

Windisch · Since 2005

The core activity of THEBIT GmbH is the training and further education of individuals in the field of project management, including preparation for certification exams such as IPMA, PMI and PRINCE2, as well as the implementation of in-house training and e-learning programs for companies and organizations.

Tillner GmbH 

Windisch · Since 2021

The core activity of Tillner GmbH is the development and provision of software solutions for production, particularly with the product tusks.io, which is designed to support companies in controlling and optimizing their production.