The Mouse is a pathfinding plugin for Grasshopper based on Theta* algorithm by Kenny Daniel, Alex Nash, and Sven Koenig. It provides the possibility to find optimized and realistic looking routes between each pair of points in Grasshopper.
Mouse was used in A2B research about circulation of people inside buildings. The research was presented in the 16th IBPSA (Building Simulation 2019) conference in Rome.
Further reading on Theta* algorithm is available here.