Reaper will import BiabXML and show the chords in the notation.
It will also export it to PDF, xml or mid.

It does what the BB chord window needs, zooms when you Ctrl+scroll mouse wheel.

Just drag n drop the xml in.

You can also copy the chords to Reaper's Regions or Markers, or in another post to lyrics

If you save BB to midi as well you will get the A B part Markers (set in Biab Midi Options) in Reaper, just drag n drop the midi in after the xml and import Markers.

You can get reascales to load into Reaper to give scale or chords to snap to.



Free Biab & BiabVST Chord Picker Tool (look at the bottom of the page for the latest version.)