Your choice of a depends entirely on your output medium.
Gaea has taken the indie and ArchViz world by storm. It offers GPU-accelerated simulation that is significantly faster than World Machine. The workflow usually involves the "Gaea Bridge" script or exporting 16-bit EXR displacement maps. 3ds max landscape plugin
: A newer tool for creating realistic climbing plants that crawl up structures in near real-time. Your choice of a depends entirely on your output medium
One of Forest Pack’s smartest features is its ability to detect the active camera. It will only render vegetation visible to the camera (and a user-defined buffer zone). This allows artists to create "infinite" forests while only rendering the trees currently in frame, saving massive amounts of RAM. saving massive amounts of RAM.