GeoGebra's creator, Markus Hohenwarter, started the project in 2001 (as part of his master's thesis) at the University of Salzburg, continuing it at Florida Atlantic University (2006-2008), Florida State University (2008-2009), and now at the University of Linz together with the help of open-source developers and translators all over the world.
Head entity: Markus Hohenwarter
Tail entity: GeoGebra
Relation (head \u2192 tail): creator
Inverse relation (tail \u2192 head): notable work