COLLWEB is a global network of collectors that builds a community of people who appreciate the value of art, cars, watches and real estate.

Who we are

COLLWEB ART is a presentation platform which provides insights into the fascination of art and the creative process leading to great works of art.
COLLWEB ART allows the direct contact and the flexible negotiations of the purchase conditions between potential buyers and artists or galleries.
Since we aim to support artists and galleries in such difficult times, you do not pay any commissions or fees which are as high as 50% on other platforms.


At COLLWEB ART, we aim to highlight the importance of creativity in life. We present the stories of creative people, their inspiration and motivation. We encourage artists and galleries to present their original art works to a like-minded community of art lovers and to share background information about techniques and their experiences in the art world, leading to new inspiration for their own work.
COLLWEB ART invites contributions from a wide variety of artistic fields including painting and drawing, sculpture, photography, digital art, design and video production.

Help us support artists and galleries worldwide.
In order to run COLLWEB ART and help creators in these hard times we rely solely on donations.


Christoph A. Zulauf, CH
Christoph A. Zulauf is a Swiss entrepreneur. He invests in technology- and innovation-driven companies for digitization and web solutions eg. and

Members of the advisory board

Arno Stein, Lawyer, Director Museum Franz Gertsch, CH
Arno Stein began work as Corporate Counsel at Disetronic Medical Systems AG in Burgdorf, Switzerland in 1996. After one year, the Company Owner Dr. h.c. Willy Michel requested legal assistance at the start-up of the brewery Burgdorfer Gasthausbrauerei AG. More and more Arno Stein assisted Dr. Michels and advised him in legal affairs, in addition to conceptual and management responsibilities in his private investments in real estate, hotels, restaurants and Swiss watches. In 1998, Dr. Michel initiated the Museum Franz Gertsch in Burgdorf (, a museum for contemporary art. From the very first moment, Arno Stein was responsible for the construction project. After the opening of the Museum Franz Gertsch in 2002, he was made Managing Director of the museum. Since then, Arno Stein has gained insight into many aspects of the art world like managing museums, galleries and private collections.

Prof. Dr. Gerhard Arminger, Scientist and Entrepreneur, DE
Gerhard Arminger served as Professor of Statistics at the Schumpeter School of Economics and Business Administration at the University of Wuppertal, Germany, from 1978 to 2014. He is the author of numerous articles in statistics, micro-econometrics and data science. Guest professorships and offers came from institutions such as the University of California at Los Angeles (UCLA), University of Arizona, Indiana University, University of Vienna, and the London School of Economics (LSE). He worked as a consultant for international companies in the areas of quality monitoring, automated analysis of market data, construction of credit scoring systems and fraud detection systems. From 1999 to 2009 he was the co-founder and Chief Scientist of SAF AG which developed software for automated replenishment in the retail business. SAF AG was listed in the Frankfurt Stock Exchange, Prime Market, in 2006 and was bought entirely by SAP in 2009. Since then, he invests in and consults for technology companies such as Hydrogrid GmbH in Vienna ( and Directors Academy (DA) in Hamburg (

Prof. Dr. Irene Daum, Independent Consultant Ph.D. (Psychology), University of London, UK
Prof. Irene Daum is an experienced academic teacher und researcher, having published more than 100 journal articles and books in the fields of psychology, neuroscience and visual art. She is an elected member of the Ateneo Veneto di Scienze, Lettere ed Arti, Venice, Italy and a Member of the Advisory Board of the Cologne-based German Art for Charity Organization "Kunst hilft Geben". She is an editor of the Online-Journal w/k ( which addresses links between art and science and works as a curator of art exhibitions.

Daniel Haldemann, Attorney at Law, Notary and Certified Tax Expert, CH
He studied Law in Bern, Switzerland and is a partner in the law firm of Haldemann + Jörg with four offices in the Bern region. The practice was founded by a member of the Haldemann Family in 1895. Daniel Haldemann is in charge of the office, which is now In its fourth generation.

COLLWEB - about us
Arno Stein, Prof. Dr. Gerhard Arminger, Prof. Dr. Irene Daum, Christoph A. Zulauf, Daniel Haldemann, in the Background Johanna II, Franz Gertsch

Pentanet GmbH - Domizil in Burgdorf
Headoffice in Burgdorf, CH



Galerie Heidefeld & Partner

True art will always explore new avenues. In our digital age, the challenge to meet new opportunities is becoming more and more critical in the art business - and we would like to break new ground. With COLLWEB ART.

Nadja Zikes, international artist

Presenting my art work on COLLWEB ART has greatly enhanced its international visibility and my sales have grown significantly since I joined.

Galerie Alex Schlesinger

I am glad to be working with the extremely innovative COLLWEB ART platform. It enables me to show the works of art of my artists to an art loving audience at home and abroad.

Heinz-Peter Schepp,
international photographer

Since I joined COLLWEB ART, the level of international interest in my work has been rising steadily. I was able to establish many new valuable contacts in the art scene and membership has also led to new opportunities for participation in exhibitions and fairs.