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Bergfäscht GmbH 

Zurich · Since 2017

TK CONSULT AG 

Zurich · Since 1995

The core activity of TK CONSULT AG is numerical modeling in the field of hydrogeology and hydraulics, particularly in the calculation of groundwater flow and the simulation of hydraulic and morphological processes in surface waters.

TNC Consulting AG 

Zurich · Since 1994

TNC Consulting AG provides consultancy, planning and project support for photovoltaic systems and offers services on building energy efficiency. Activities include project development (alpine PV, agri‑PV, floating PV), PV system planning and operation, PV noise‑barrier solutions, and measurement/analysis services.

Topotek 1 Architektur GmbH 

Zurich · Since 2017

Topotek 1 is an architectural firm specializing in the planning and realization of construction projects. The company's core activities encompass the areas of architecture, landscape architecture, design, and construction. The company offers services such as design, planning, and implementation of construction projects and is involved in various projects, including buildings, landscapes, and urban developments.

Tosoo AG 

Zurich · Since 2020

The core activity of Tosoo AG is the development and manufacture of portable sleep devices, in particular a sleep headband equipped with EEG sensors, aimed at improving sleep quality. The company combines expertise from the fields of neurology, sleep science, textile design and software development to develop innovative solutions for improving sleep quality.

townset GmbH 

Zurich · Since 2016

The core activity of TownSet GmbH is the consulting and development of sustainable urban planning projects, including the creation of feasibility studies, master plans and the implementation of projects in the field of urban development. The company also offers innovative solutions for the development of Smart Cities, the renovation of historic cities and the upgrading of informal settlements in dense cities.

trafit solutions gmbh 

Zurich · Since 2009

The core activity of trafIT solutions gmbh is the development of software solutions and services for public transportation, particularly for the rail industry. The activities include: development of software products such as OnTime, railOscope, OpenTrack Hub and Components; software development, project management, conception, realization, deployment and operation; research and consulting in the areas of process analysis, conception and planning, timetable optimization and data management; data analysis, reporting and mining as well as data quality management; algorithmic decision support for the construction of periodic railway timetables. The company specializes in the efficient handling of large data volumes and mathematical optimization in the context of public transportation.

Trägerorganisation für die Berufsprüfung für Treuhand und Beratung 

Zurich · Since 2002

Trägerorganisation für die Berufsprüfung für Treuhand und Beratung is the examination secretariat and portal for the federal professional examinations in the fiduciary (treuhand) sector. It coordinates exam regulations and admission requirements, publishes information on qualifications and examinations, and provides registration forms and downloadable resources.

Trägerorganisation für die Höhere Fachprüfung Treuhand 

Zurich · Since 2002

Trägerorganisation für die Höhere Fachprüfung Treuhand is an organization that oversees the administration of the higher professional examination in the fiduciary sector and defines admission requirements, curricula, qualification procedures and certificates. According to the website, the sponsoring bodies include TREUHAND|SUISSE and the Kaufmännischer Verband Schweiz.

Tramli GmbH 

Zurich · Since 2023

Tramli GmbH sells a USB-powered device that displays real-time departure times for trams, buses and trains at Swiss public-transport stops. The device connects via 2.4 GHz Wi‑Fi, uses GTFS data from Opentransportdata for live schedules, has a PMOLED screen and no internal battery, and is configured through a web application using the device's serial number.

TRANSA Backpacking AG 

Zurich · Since 1984

Transa is an outdoor and sports specialty retailer offering a wide range of products and services, including: sale of outdoor and sports equipment, clothing and shoes from various brands; rental of camping and winter sports equipment; repair and maintenance services for outdoor equipment; advice and sale of gift cards; organization of events and workshops in the outdoor and sports sector. The company's core activity is the sale of outdoor and sports products as well as the provision of services that support the outdoor and sports experience.

Transa Zürich AG 

Zurich · Since 2010

Transformation Architects GmbH 

Zurich · Since 2023

The company Transformation Architects GmbH is engaged in the development and implementation of transformations in companies, particularly in the area of organizational and personal development. The core activity includes accompanying and supporting companies in shaping future-oriented structures, cultures, and leadership models, with the goal of promoting positive change and development. This also includes topics such as Circular Economy, Purpose Economy, Doughnut Economy, responsible ownership, self-leadership, and leadership, as well as the development of future-oriented value propositions.

Habitate GmbH 

Zurich · Since 2009

The company Treeproducts GmbH, operating under the name TEN Archery, is engaged in the manufacture and sale of archery equipment, particularly bows and accessories.

Tremp Landschaftsarchitekten GmbH 

Zurich · Since 2016

The core activity of Tremp Landschaftsarchitekten is the planning and design of landscape and garden projects, including cemeteries, parks, gardens, courtyards and other public and private open spaces. The company also provides services in the fields of landscape architecture, garden and landscape construction, as well as project management.

Treuco AG 

Zurich · Since 1993

The company offers comprehensive services in the areas of law, taxes, finance, and management. The core activities include: * Legal advice for private individuals, companies, and international corporations in the areas of contract law, commercial and corporate law, financing, restructuring and insolvency law, real estate law, as well as labor and social law * Tax consulting and planning for private individuals and companies * Financial services such as asset management, portfolio analysis, and estate and succession planning * Management and administrative tasks such as business management, accounting, and controlling * Consulting for the founding and management of companies, including the creation of shareholder agreements and the optimization of business processes. The company positions itself as a full-service provider for all legal, tax, and financial matters of private individuals and companies.

Triangel GmbH 

Zurich · Since 2015

The core activity of the company Triangel is outreach family support, contact support and clarification, as well as kindergarten and after-school care supervision. The company provides support for children and their families to unfold and develop their resources, and is guided by the well-being of the child and the principles of child protection.

Trust Work GmbH 

Zurich · Since 2019

Trust Work GmbH provides HR and accounting services tailored to start-ups, scale-ups and corporates. Services include payroll, HR administration and operations, bookkeeping, managed accounting, fractional CFO support, interim management and consulting. The company operates with digital, automated workflows and scalable service packages.

Twiliner AG 

Zurich · Since 2021

The core activity of Twiliner AG is the development and design of innovative travel buses, particularly night travel buses, with a focus on comfort, safety and sustainability. This includes the development of special seat concepts, collaboration with partners from the aviation and automotive industries, and the creation of a unique travel experience for passengers.

ucentrics AG 

Zurich · Since 2024

ucentrics AG provides a platform that converts industrial expertise into AI- and XR-powered step-by-step workflows, delivers contextual guidance on mobile devices and AR glasses, verifies task execution in real time, and generates automatic documentation for compliance.