Bartleby - Great Books Online
Browse classics of literature, fiction, non-fiction and verse. You can also search Bartleby for dictionaries, encyclopaedias, thesauri, books of quotations and English usage guides.

Bibliomania
Collection of fiction, poetry, classic texts and study resources.

English Server
Collection of online texts, journals, fiction, drama, philosophy and history.

Indices of Great Books
Concordances of Great Books - fully searchable word indexes

Internet Public Library's Online Texts collection

Master Works of Western Civilization

Online Books
From the Digital Library, University of Pennsylvania

Project Gutenberg