Prompt Title: Crowd modeling software.

Thunderhead Engineering Pathfinder is a software program for simulating human evacuation and crowd dynamics. It is used by architects, engineers, and safety professionals to design and evaluate building evacuation plans, emergency procedures, and crowd management strategies.

Pathfinder uses advanced algorithms to model the behavior of individuals and groups in emergency situations. It can simulate various scenarios, such as fire, explosion, or earthquake, and calculate the time required for people to evacuate a building or area. The program can also generate detailed reports and visualizations, including heat maps, contour plots, and 3D animations.

Pathfinder is widely used in the architecture and engineering industry, as well as by government agencies, universities, and research organizations. It is considered one of the most accurate and reliable crowd simulation tools on the market, with a user-friendly interface and comprehensive documentation and support.