He is primarily known for his work on GNOME, OpenOffice.org and now LibreOffice[citation needed].

He has been a contributor to the GNOME project for a long time working on its infrastructure and associated applications, particularly CORBA, Bonobo, Nautilus and GNOME accessibility.

[3] He created the direct binding, hashvals, and dynsort implementations for GNU Binutils and glibc.

[3] Most of this work was focused at making OpenOffice.org and now its fork LibreOffice start faster,[3] and was later subsumed into the "-hash-style=gnu" linking optimization.

He supports LibreOffice and Evolution as the free software solutions for document editing and groupware.