Dryad lets you intuitively create beautiful trees for your virtual world or game.
Dryad was created by the Stanford Virtual Worlds Group, as part of our work on broadening the accessibility of virtual worlds. They write:
In Dryad, you create a tree by visually navigating to it through a design space: the space of all trees. This space has close to a hundred dimensions and Dryad lets you move around it as if it were a city map. To help you find your way, Dryads around the world communicate to share which trees were picked in the past. A collaborative mapping of the tree space emerges, which your Dryad uses to gently steer you towards high-quality finds. We call this collaborative design space exploration.
Dryad currently runs on the Windows and Mac platforms, however, a Linux version will be available
As soon as we finish compiling it. Given how many things we have to statically link, it may be a while.
You can export your tree to Wavefront .OBJ files, which you can import into Blender. For more details, visit the Dryad website.