PhilPapers is a comprehensive index of philosophy books and articles. This database offers unique features such as real-time indexing of pre-prints, fine-grained classification by topic, email alerts, reading lists, advanced search functionality, and discussion forums.
Humanities International Complete is an index to articles (many full-text, online) in scholarly journals and literary magazines. Provides very good coverage of little magazines and literary reviews and, for 2000-, for scholarly journals in the humanities (history, literature, philosophy, and religion).
Incorporates coverage formerly provided by the American Humanities Index (published by Whitston, 1975-2005).