BullAnt is a Rhino3d/Grasshopper plug-in primarily for Architects and Engineers (but also other Rhino/Grasshopper users) featuring computational design tools to enhance and extend the parent program and other 3rd party plug-ins. BullAnt features commands including mesh relaxation (minimal surfaces), mesh inflation (ETFE cushions), symmetry automation, tessellation (polygon packing), structural modelling/sketching (including parametric generation in Grasshopper), geodesic domes and curve network processing. Also included are commands to model members such as steel beams. International standard profiles are included in the plug-in library, which can be easily extended with custom user profiles. Parametric profile from a property table can be applied to a document layer (swept along all curves within layer) or discrete curves. Profile table may be exchanged with external software. Swept profiles are updated automatically if rail curve is altered by user.