Leader of the #OpenPrinting project since it was founded in 2001, introduced the CUPS printing system in Mandrake Linux in 2000 working at MandrakeSoft and with this and a lot of evangelism (booths, talks, tutorials) made the other distros also switch to CUPS, since 2006 printing maintainer at Canonical, co-organizing annual meetings with the Printer Working Group (PWG), since 2008 every year mentoring in Google Summer of Code, doing everything to make printing on Linux and similar "just work".