Extensions:2.6/Py/Scripts/Import-Export/generic axis conversion

Since many applications use a different axis for 'Up', there are axis conversion there settings, Forward and Up axis - By mapping these to different axis you can convert rotations between applications default up & forward axis.

Blender uses Y Forward, Z Up (since the front view looks along the +Y direction).

For example, its common for applications to use Y as the up axis, in that case -Z Forward, Y Up is needed.