This edition includes 619,748 type-I QSOs & AGN plus about 1.32 million quasar candidates of 80%+ QSO-likelihood -- details are in the ReadMe. Radio and/or X-ray identifications are shown where applicable, plus, for the candidates, the probability of each being a true quasar.
Here is the ReadMe, and a quick browse of sample data (in flat text form) is here.
Get the 61 Mb zipped file HERE.index to numerical citations in the file is here.
The published version is the Half Million Quasars catalog (HMQ: 2015, PASA 32, 10) which excludes candidates and is to 2015 only. The HMQ page is here -- has FITS file also.
Eric Flesch, last updated 15 March 2019