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company directory

onsite partner ag 

Winterthur · Since 2003

The core activity of onsite partner ag is the development and implementation of software solutions and web applications for specific industries, particularly for carpentries, the dairy industry and building cooperatives, as well as the provision of IT services and support for small and medium-sized enterprises (SMEs).

onstructive GmbH 

Winterthur · Since 2019

The core activity of onstructive GmbH is the development, maintenance and operation of software for health insurance companies.

Onur Forrer Academy 

Winterthur · Since 2021

The company offers services in the areas of sales training, coaching, and leadership development. The core activities include: Sales Training: Purpose Driven Sales and Growth Mastery to increase sales and profitability Coaching: 1:1 coaching for individuals and companies to overcome sales challenges and achieve sustainable results Leadership Development: Train-the-Trainer training, Sales Leadership Training, and coaching for executives to improve leadership skills and team performance Online Academy: Online courses and coaching for sales and leadership professionals The company's core activity is the development and implementation of training and coaching programs for sales and leadership professionals to improve their skills and performance.

Oopsie Daisies GmbH 

Winterthur · Since 2024

Oopsie Daisies GmbH develops narrative, artistically driven video games, including the title “Tom the postgirl”. The studio’s activities cover game design, art and story direction, animation and sound.

OPAL IT Consulting AG 

Winterthur · Since 2002

The core activity of Opal IT Consulting AG is the consulting, development and implementation of SAP solutions for companies in various industries, particularly in the areas of logistics, distribution logistics, finance and controlling. The company also offers services such as customizing, ABAP programming, migration and cutover support.

optifirm GmbH 

Winterthur · Since 2024

optifirm GmbH develops tailored educational programmes and provides consulting in education management, as well as organising and delivering training courses and workshops, including support for digital learning.

Optima Versicherungstreuhand GmbH 

Winterthur · Since 1994

The core activity of OPTIMA Versicherungstreuhand GmbH is comprehensive financial consulting, including: wealth management and investment advice, pension and insurance consulting, tax consulting and planning, real estate consulting and brokerage, testamentary and inheritance planning, estate planning and estate administration. The company provides independent consulting and supports customers in planning and implementing their financial goals, including retirement planning, risk management and wealth accumulation.

Option 4.0 AG 

Winterthur · Since 2018

Option 4.0 AG designs, develops, implements and operates cloud-native engineering solutions, supporting clients with solution architecture, technical implementation and ongoing operation. The company provides cloud engineering, digital strategy, program & project management, and data analytics as a service.

Optiwin Consulting, Inhaber S. Zuffi 

Winterthur · Since 2011

The core activity of OptiWin Consulting is the provision of services in the fields of trust and corporate consulting, particularly in the areas of: * Trust: accounting, financial accounting, tax consulting * Corporate consulting: controlling, company formations, succession planning * Personnel recruitment. The company offers tailored solutions for companies and private individuals in Winterthur and its surroundings.

Orion Bau AG 

Winterthur · Since 2019

The core activity of Orion Bau AG is the execution of construction work, particularly in the area of conversions and renovations, including the repair of concrete structures, reinforcement of load-bearing structures, repairs to sewage systems, masonry work, plastering work, drywall construction, facade scaffolding, thermal insulation and other related services.