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Sofico, Société fiduciaire d'études et d'expertises comptables S.A. 

Lausanne · Since 1962

The core activity of Sofico SA is the provision of fiduciary services, including: accounting activities, tax consulting activities, and auditing (revision and examination of financial reports). The company thus offers financial management and consulting services, particularly for companies and private individuals.

Sogeni S.A. 

Lausanne · Since 1970

The company's core activity is the provision of services in the field of inheritance research and management, including: searching for heirs and beneficiaries, locating missing persons, targeted search for assets, creation of inheritance plans, verification of succession, liquidation of estates, and historical and family genealogy. The company offers these services primarily to banks, insurance companies, administrators, notaries, lawyers, and private individuals.

Sogeprom Développement Sàrl 

Lausanne · Since 1998

Sogeprom Développement Sàrl is a real estate developer that plans and delivers residential projects. The website lists ongoing and completed residential developments featuring apartments in PPE (condominium ownership).

Sogeprom Immobilier Sàrl 

Lausanne · Since 1998

Sogeprom Immobilier S.à r.l. develops and delivers residential real estate projects and markets apartments sold as condominium units (PPE). The website presents current and completed housing projects with basic project details such as number of apartments.

Sogeprom Investissement Sàrl 

Lausanne · Since 1999

SoHHytec SA 

Lausanne · Since 2020

The core activity of SoHHytec is the development and provision of sustainable technologies for the production of green hydrogen and renewable energy, particularly for use in various industries such as the chemical industry, space sector and micro-grid provision. The company focuses on the development of patented technologies that offer a cost-effective and environmentally friendly solution for the production of green hydrogen and renewable energy.

Solan prod Sàrl 

Lausanne · Since 2016

The core activity of Solan Prod is the production of documentary films, particularly in the field of science communication and popularization. The company creates films for various purposes, including education, research, and public relations, and collaborates with institutions such as the EPFL (École polytechnique fédérale de Lausanne).

Solartech concept SA 

Lausanne · Since 2024

The core activity of Solartech Concept SA is the planning, installation and maintenance of renewable energy systems, particularly solar systems, as well as providing services in the field of energy efficiency and security. The company offers its customers a comprehensive range of services, from consulting and planning to the installation and maintenance of systems, to ensuring safety and efficiency.

Solken Quantitative Research SA 

Lausanne · Since 2021

The core activity of Solken is the development and application of quantitative research methods and mathematical models for the analysis and optimization of investment strategies, particularly in niche financial markets such as the market for convertible bonds. To this end, the company provides consulting services for asset management communities.

SoMICE Sàrl 

Lausanne · Since 2010

SoMICE Sàrl is an agency for the design and organization of corporate events, focusing on meetings, incentives, congresses and events. It provides personalized support, logistical management for congresses and medical events, and tailored services for corporate occasions delivered by a multilingual team.

Somos (Switzerland) Sàrl 

Lausanne · Since 2014

Somos (Switzerland) Sàrl is a privately held company focused on creating, developing and scaling sustainable technology platforms. It partners with founders, operators and strategic partners across areas such as energy, infrastructure, real assets and agribusiness, and may make proprietary capital participations tied to operational engagement; it does not provide regulated financial or investment services.

SONEXOS SA 

Lausanne · Since 2022

The core activity of Sonexos is the development and delivery of advanced solutions for audio enhancement, noise and vibration control in the consumer, transportation, automotive and industrial sectors. In particular, the company focuses on the development of high-performance audio technologies and acoustic solutions, such as plasma panel technology, which enables active sound absorption in enclosed spaces.

SONIMAX informatique, J. Sinnathamby 

Lausanne · Since 2003

SONIMAX informatique, J. Sinnathamby provides computer repair and diagnostics, virus and spyware removal, and hardware/software backup and data recovery services. The business also offers network installation and maintenance, sales of new and used PCs and accessories, IT training, and responsive web design.

Sonrysa Partners SA 

Lausanne · Since 2011

Sonrysa Partners SA places IT and digital consultants and designs and delivers IT projects. Its services include infrastructure & cloud, ERP, technology solutions (integration, business intelligence, data science) and cybersecurity.

Sonrysa SA 

Lausanne · Since 2012

Sonrysa SA supports the acceleration of IT and digital projects. The company sources and provides technology professionals (staff augmentation, missions or project engagements) and delivers services in infrastructure & cloud, enterprise resource planning, technology solutions and cybersecurity, including recruitment and mission follow‑up.

Sophos Hotels SA 

Lausanne · Since 2006

The core activity of Sophos Hotels SA is expertise and hotel management, particularly in the development, asset management and operational management of hotels, as well as consulting and supporting investors in the opening and management of hotels. The company also offers services such as revenue management, procurement, architecture and interior design.

So Picanha Sàrl 

Lausanne · Since 2024

So Picanha Sàrl provides Brazilian churrasco catering and rodizio service for events and private celebrations, offering a selection of skewered meats, hot and cold buffets, and grilled pineapple dessert.

Sorachim, société de recherches, d'études et d'applications chimiques et biologiques S.A. 

Lausanne · Since 1975

The core activity of Sorachim is the development, manufacture and distribution of diagnostic reagents, enzymes and chemicals for the production of high-quality diagnostic products, particularly for clinical chemistry. The company also provides technical support and consulting services to customers to support them in the production and application of their diagnostic products.

Space Sustainability Rating 

Lausanne · Since 2023

The company's core activity is the development and management of the Space Sustainability Rating (SSR), an assessment system for the sustainability of space missions and operations. The company provides a platform for evaluating and improving the sustainability of space activities and collaborates with partners from industry, research, and politics to promote the sustainability of space.

Spacetalk SA 

Lausanne · Since 2023

The core activity of Spacetalk SA is the development and implementation of digital platforms and solutions for the space industry, particularly in the areas of Space Situational Awareness (SSA), security, data management and communication. The company offers expertise in Space Law, IT infrastructure, digital design engineering and lobbying as well as reputation management. It works closely with international organizations, such as the European Space Agency (ESA) and the United Nations, to develop innovative solutions for the peaceful use of space.