I used RealBand for quite a while but now with the Biab Plugin you can do it all in your 64 bit DAW.
If you use Reaper ReaTrak will integrate with the Biab Plugin and import the chords from Biab or Biab Plugin.
If you use Studio One you can import the Biab Plugin Chords with a script.
If you use Cubase you can import the chords from any midi track using held chords.