Bayer	Dietetic and diabetic products
Borealis Group	Leading integrated polyolefin supplier (#5 worldwide)
Hewlett Packard	IT
Hill & Knowlton	Public Relations
Mayr-Melnhof	Market leader Europe recycled carton board and boxes
Maxdata	IT
Montblanc	Fine writing instruments and accessories
Mosburger	Corrugated packaging
Münze Austria	Producer of currency and collectible coins
Partners in PR	Public Relations
Peek & Cloppenburg	Chain of fashion department stores in Central Europe
Reichhold	Polymer resins for the composite, coating, and paint industry
Shopping City Süd	Austria’s largest shopping mall
Veitscher Magnesitwerke	Market leader Europe refractory material
Wavoka	Software start-up company

FPP (Forst-Platte-Papier)	Partnership for sustainable forest management
INSEAD, Fontainebleau	One of the world's top-tier business schools
Procarton - Forum Wellpappe	European communication platform for paper producers
Kosmetik Transparent	Interest group of cosmetic companies like Beiersdorf, Colgate Palmolive, Johnson & Johnson, Lever Fabergé, L'Oréal, Procter & Gamble, Schwarzkopf & Henkel, und Wella

Independent Communicators Alliance	USA
Make-A-Wish Foundation	Austria
Nasher Museum of Art, Duke University	USA

This list includes companies where Doris Regele and Wolfgang Regele have worked either in an employment or in a consulting type of relationship.