If you are researching physical machinery rather than a download, "Simba" refers to specialized mining and construction equipment: Junior Simba Mini Go to product viewer dialog for this item. : A compact long-hole drilling machine designed for underground mining in tight spaces. Simba 1:20 Wheel Loader
There is also a mobile app called Simba MiniGames featuring various kitten-themed puzzles and challenges. Physical "Simba Mini Loader" Equipment
In scientific research, SimBA (Simple Behavioral Analysis) is a pipeline used by neuroscientists to develop machine-learning classifiers for animal behavior.