Deezl

Shizen is a Blender add-on from Deezl that adds trees to a scene with one click. It ships with documentation, carries a royalty-free license, and supports Blender releases from 2.79 through 3.0.

Deezl Sequoia is a Blender add-on for populating scenes with trees, plants and other assets. It offers size, amount and randomness controls, real-time results, and a browsable thumbnail library.