OpenSCAD - OpenSCAD is a software for creating solid 3D CAD objects.
Booking Ninja - Booking Ninja allows you to create a free, simple, online reservation tool for your restaurant or cafe.
FreeCAD - An open-source parametric 3D modeler
OpenTable - Make online restaurant reservations, read restaurant reviews from diners, and earn points towards...
ImplicitCAD - ImplicitCAD is a programmatic CAD program, implemented in Haskell.
Hostme - Reservation, table, waitlist and loyalty management for restaurants