Cornelius Schumacher is a German open-source software developer. He was born in

Tübingen Tübingen (; ) is a traditional college town, university city in central Baden-Württemberg, Germany. It is situated south of the state capital, Stuttgart, and developed on both sides of the Neckar and Ammer (Neckar), Ammer rivers. about one in ...

, Germany, and currently lives in

Erlangen Erlangen (; , ) is a Middle Franconian city in Bavaria, Germany. It is the seat of the administrative district Erlangen-Höchstadt (former administrative district Erlangen), and with 119,810 inhabitants (as of 30 September 2024), it is the smalle ...

, Germany. Schumacher is best known for his long-term involvement with the

KDE KDE is an international free software community that develops free and open-source software. As a central development hub, it provides tools and resources that enable collaborative work on its projects. Its products include the KDE Plasma gra ...

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 Bitcoin (abbreviation: BTC; Currency symbol, sign: ₿) is the first Decentralized application, decentralized cryptocurrency. Based on a free-market ideology, bitcoin was invented in 2008 when an unknown entity published a white paper under ...

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 The Constructive Cost Model (COCOMO) is a procedural software cost estimation model developed by Barry W. Boehm. The model parameters are derived from fitting a regression formula using data from historical projects (63 projects for COCOMO 81 ...

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.

References

External links

The Blog of Cornelius
{{DEFAULTSORT:Schumacher, Cornelius 1969 births Living people KDE German computer programmers Free software programmers People from Tübingen