Amapi was a 3D modeler created by Yonowat S.A. that incorporates both polygonal modeling and NURBS surface modeling. Amapi was used to create models for industrial design, architecture, interior design, furniture, exhibit design, packaging, bottling, illustration, video games and multimedia. The name of both the company and the software originate from a common saying by the cartoon character Droopy: "You know what? I'm happy.".
Amapi offered an original interface compared to other contemporary modeling software. The software divided modeling into three main activities: construction, modeling, and assembly. Switching between these three activities was accomplished by swiping the cursor against the right hand side of the screen, an example of a gestural user interface.