currently importers available in the members area are:
yabb2_import
smf_1_1_import
classic_6_7_import
phpbb_3_import
wwwboard_import
threads_6_5_import
vbulletin_3_8_import
phpbb_2_import
fusionbb_3_import
wowbb_import
But there might be others that are not published yet for us to use. Could be they are in beta testing still.