It appears that dst to pes conversion is quite often done to transfer designs from Tajima to Brother machines. As far as we know, embroidery designs in Tajima format (.dst) can be easily converted to their Brother (.pes) equivalents with one of the dedicated embroidery converters or editors, some of which are listed below.
Open DST file Open PES fileOnline software that allows users to change design formats, resize designs, change colors, and more
An embroidery designs manager
A converter for embroidery designes
A popular embroidery design and printing software
A free converter for embroidery design files
Advanced version of the popular Embroidermodder
An embroidery design suite
A home embroidery software
An embroidery design tool from Janome
A free embroidery editor and converter
An embroidery editor and converter
An easy embroidery and apparel decoration design software