Matthias Spieß

sprd.net AG operates an online platform for buying, selling, and custom designing clothes. Its product range includes men's and women's shirts, jackets, pants, underwear, shawls, and clothing accessories. The firm also offers novelty and office items, such as bottles and mugs, phone and table covers, bags, caps, aprons, and buttons. The company was founded by Matthias Spieß and Lukasz Gadowski in March 2001 and is headquartered in Leipzig, Germany.

IT-Service Leipzig GmbH provides engineering and technical services for non-destructive testing. Its services include gamma ray radiography, industrial X-ray sets, ultrasonic testing, calibration and standardization service for measuring gauges, digital radiography, and visual, dye penetrant, magnetic particle, and leak testing. The company was founded in 1992 and is headquartered in Leipzig, Germany.

Spreadshirt, Inc. operates as an eCommerce platform for printing of clothing and accessories. It allows customers to create, buy, and sell their ideas on various products; and print their own text, design, or photo on T-shirts and other personalized clothing, such as personalized aprons. The firm serves companies and clubs, artists and bloggers, celebrities, YouTubers, businesses, organizations, teams, and individuals. The company was founded by Lukasz Gadowski and Matthias C. Spiess in 2004 and is headquartered in Boston, MA.