In 1996 De Brouwer was one of the founders of PING (EUnet spin-off), the commercial company that came out of the European Unix Users Group (EUUG), which was acquired by Qwest Communications International (NYSE: Q). In 2000 Qwest became the third long-distance carrier in the US and the KPNQwestbackbone was carrying more than 50% of European IP traffic.
Qwest Communications International, Inc. was a large United States telecommunications carrier. Qwest provided local service in 14 western U.S. states: Arizona, Colorado, Idaho, Iowa, Minnesota, Montana, Nebraska, New Mexico, North Dakota, Oregon, South Dakota, Utah, Washington, and Wyoming. On April 22, 2010, CenturyLink announced it would acquire Qwest in a stock-for-stock transaction. The merger closed on April 1, 2011. Qwest began doing business as CenturyLink in April 2011.
In 1999, Jobscape, De Brouwer's electronic employment site, merged with eight similar sites to make up Stepstone (STP.NO) before going public on both the London Stock Exchange and the Oslo Bors. The sequel to Stepstone, Pajamanation, the global site that empowered micropreneurs to work from home, filed for bankruptcy after 9 years in 2010.
In 2010 he became the business partner of Tan Le, founder of Emotiv and took up the challenge to expand Emotiv to Europe.