Paragon Driver for Seagate
The NTFS drivers provided by Seagate are OEM versions of Paragon's NTFS for Mac 14/15.

They share the same code base but work with Seagate's external (and probably internal, if you replaced the original Apple HDD - not tested) drives only.

By buying an external Seagate drive you already paid for it in the price category of dimes.