He is the creator of the Nuvola icon set, which has been used in many projects, including script.aculo.us[1] and Prototype JavaScript Framework.
[2] He has designed icons for several web sites, including openSUSE.
He has also designed icon sets for applications such as Flumotion, Samba 2000 , and Strata (an insurance application), as well as for various KDE projects, such as Kontact and the KDE Edutainment Project.
David is one of the founders of the Oxygen Project, which is the default icon theme on the KDE flagship desktop.
[3] He has worked as a consultant for SuSE Linux, as an independent graphic designer, and at Meebo.