This Free Blender Tool Makes Hair Rigging Easier

If you're working with stylized 3D characters, this new Blender tool can save you the hassle of placing hair bones manually during rigging. It automatically generates bone chains from a selected hair tip and lets you choose whether the bones follow the hair strand or form a straight line

You can manually define hair tip and hair root markers for better control, and adjust the number of bones, how much hair they cover, root depth, direction, and more. The generator supports open hair cards, closed or tubular hair, and multiple selected hair strands.

To use it, you'll need Blender 4.5 LTS or newer. The generator works fully inside Blender and requires no external dependencies or network access. You can download it from the Blender Extensions platform. 

You might also be interested in Draw-Hair, a free tool that lets you draw hair curves directly in the Blender viewport while following the shape of a guide mesh:

ShellFit could be a handy tool for fixing body and clothing clipping in 3D characters:

There's also a similar free option called Proximity Snap, which is more focused on modeling and can be used for a variety of tasks: