I use Datapage. It works pretty good. I just checked the 'update' feature and it says it will accept the following formats:
Avail
Chorus
Pcdmis Dos
Endura SPC1+
SPC1+
MeasureMax
MicroMeasureIV
MicormeasureIII
SpreadSheet
Pcdmis Windows
LK
Tutor
Valisys Results
SPC2000
Giddings&Lewis CSV
DataMyte
Hopefully one of these will work for you.