Cornelius Schumacher is a German open-source software developer. He was born in Tübingen, Germany, and currently lives in Erlangen, Germany. Schumacher is best known for his long-term involvement with the KDE project and leadership within the KDE e.V. organization.
Biography.
Schumacher has been a contributor to KDE since 1997, where he primarily worked with the KDE Personal Information Management (PIM) team. He served as the main developer and maintainer of KOrganizer for many years, significantly contributing to KDE's suite of productivity applications.
In addition to his work with KDE, Schumacher contributed to early Bitcoin documentation efforts by helping to extend developer-focused resources for the Bitcoin website.
He joined the board of KDE e.V. in 2002 and was elected as its president in the summer of 2009.
On October 11, 2009, Schumacher published an analysis estimating the development cost of the KDE software package using the COCOMO model and SLOCCount tool. With 4,273,291 lines of code, he estimated the cost to be approximately US$175,364,716. This calculation excluded key components such as Qt, the Calligra Suite, Amarok, Digikam, and other applications outside KDE core.