Allplan

Allplan is a massive, heavily respected BIM titan that completely dominates the German-speaking European market (DACH region), specifically in the highly complex civil engineering and infrastructure sectors. While Revit is largely built for vertical buildings (skyscrapers), Allplan is historically the weapon of choice for massive horizontal infrastructure (bridges, tunnels, and highways). Its absolute strongest capability is complex concrete reinforcement detailing (Rebar). Modeling highly complex, twisting steel rebar inside a curved concrete bridge abutment is mathematically agonizing. Allplan features one of the most powerful 3D rebar engines on the planet. It generates the complex 3D rebar, instantly outputs the 2D bending schedules, and ensures the steel does not physically collide inside the concrete. It is highly favored by massive civil engineering consortiums because it seamlessly handles massive terrain modeling. It can import gigabytes of topographical point-cloud data from a drone, model a massive highway slicing through a mountain, and accurately calculate the millions of cubic meters of dirt that must be excavated, integrating seamlessly with their bridge design modules.