According to the Perseus Digital Library at Tufts University:
The Perseus Digital Library is pleased to announce the 1.0 Release of the Perseus Catalog.
The Perseus Catalog is an attempt to provide systematic catalog access to at least one online edition of every major Greek and Latin author (both surviving and fragmentary) from antiquity to 600 CE. Still a work in progress, the catalog currently includes 3,679 individual works (2,522 Greek and 1,247 Latin), with over 11,000 links to online versions of these works (6,419 in Google Books, 5,098 to the Internet Archive, 593 to the Hathi Trust). The Perseus interface now includes links to the Perseus Catalog from the main navigation bar, and also from within the majority of texts in the Greco-Roman collection.
For more information about the catalog, please see here (HT: Charles Jones).