Klaus Friedrich

Boku Network Services AG provides payment solutions for online merchants. Its solution areas include payment processing, mobile marketing campaigns, and customer relationship management. The firm design mobile applications that cover content management, web-based reporting, and short message service dialogues. The company was founded by Ingo Lippert, Christian Hinrichs and Armin Barbalata on March 1, 2000 and is headquartered in Munich, Germany.

Holtzbrinck Digital GmbH (Holtzbrinck Digital) is the strategic investment subsidiary of Verlagsgruppe Georg von Holtzbrinck GmbH in Germany. Formerly known as Holtzbrinck Networks GmbH, the firm originated in 2000 when all internet investments from the Verlagsgruppe von Holtzbrinck were consolidated to form Holtzbrinck NetworXs AG, which was subsequently split into Holtzbrinck Networks GmbH and Holtzbrinck Ventures GmbH in 2006. Located in Munich, Holtzbrinck Digital aims to develop new areas of business on the Web by managing interests in Internet companies and acquiring start-ups. From their experience as a venture partner helping to build B2C Internet companies, the firm has unique knowledge of how to build brands, win customers and handle regional expansion. They invest from the balance sheet of the parent company.

HV Capital Manager GmbH (HV Capital Manager) is a venture capital firm founded in 2000 by Lars Langusch. The firm is headquartered in Munich, Germany.

MyHammer AG engages in the development and operation of an online search portal for skilled workers and service providers. It enables users to find specialists based on the required services. The company was founded in 2005 and is headquartered in Berlin, Germany.

INNOFACT AG operates as a full-service market research company that provides online data research and collection services. The firm’s areas of research include test purchasing, employee surveys, website pre- and post-testing, user surveys, tracking, customer satisfaction surveys, customer segmentation, and competitive intelligence. The company was founded in 2001 and is headquartered in Dusseldorf, Germany.

Poolworks (Germany) Ltd. provides online information services for students. The company was founded by Ehssan Dariani, Dennis Bemmann, Lukasz Gadowski and Jonathan Teklu in October 2005 and is headquartered in Berlin, Germany.

Part of Zalando SE, Holtzbrinck Ventures GmbH & Co. KG is a German company that engages in holding and management of equity investments. The company is based in Munich, Germany. The CEOs of the company are Martin Weber, Andreas Wisser.

Kommunale Wasserwerke Leipzig GmbH provides waste water disposal services and is ultimately controlled by the City of Leipzig. The company is based in Leipzig, Germany. The CEOs of the German company are Ulrich Meyer, Michael M. Theis.

Fernwasserversorgung Elbaue-Ostharz GmbH is a German company founded in 1990 that provides drinking water for central Germany. The company is based in Torgau, Germany and ultimately controlled by the City of Leipzig. The company focuses on topics such as drinking water quality, resource protection, and sustainability. The company offers services such as preparation, distribution, and analysis of drinking water.

IFTEC GmbH & Co. KG is a German company that specializes in maintenance and repair services for public transport rail vehicles. The company was founded in 1896 and is based in Leipzig, Germany. The company's services include modernization, accident repairs, production of wheel tires, general inspection, and bogies. The company is competent problem solvers for all maintenance issues in the field of public transport infrastructure and rail vehicles. The company is a regular exhibitor at InnoTrans, the world's largest trade fair for transport technology.