The following are links to various opera related websites:

Cantare L’Opera.com • Italian diction for opera arias, opera librettos.
La Scala • Contains information on their season, artist photographs and biographies, as well as an extensive historical database.
Metropolitan Opera • Website for one of the world’s leading opera companies.
OPERA America • Provides a variety of informational, technical, and administrative resources to the greater opera community.
Operabase • Opera Schedules, Opera Reviews, Opera Links . . .
OperaGlass • An opera information server with detailed information, including performance histories, synopses, libretti, discographies, pictures, and more.
OPERA NEWS • The World’s leading online opera magazine.
Opera Resource Guide • Opera Collection of the Carnegie Library of Pittsburgh.
operasvoice.com (German/English) • the first international educational portal concerning classical singing.
OperaStuff • Opera Resources on the Internet.
Opera synopses • Synopses of numerous operas.
Opera Vocal Scores • Opus II’s catalog.
Royal Opera House: Covent Garden • Presents a full range of opera of international standard at Covent Garden.
Singing Voice: Opera Scores • Links to piano-vocal and full scores of operas at Amazon.com.
Web la Opera • La historia de la opera, un diccionario de términos, fichas operísticas con argumentos, discografías y libretos, biografías de cantantes, teatros, etc. (Spanish).