Karbon (formerly Karbon14, Kontour, and KIllustrator) is a vector graphics editor. It is a component of Calligra Suite, an integrated graphic art and office suite by KDE. The name is a play on KDE and the radioactive isotope Carbon-14.On 26 February 2012 the lead developer clarified on the Calligra development mailing list that the application’s name is simply “Karbon” without “14”.