Farron, Jim & Feldman, Alex. The Gilbert and Sullivan Archive. http://diamond.boisestate.edu/gas/
Gilbert and Sullivan are two of the most famous "Light Opera" composers. "Light Opera," is a form that is usually comic, and similar to a musical in tone- song interrupted by dialogue. This searchable site provides plot summaries, scores, comentary, biographical information, pictures, music, articles, and over 55 librettos. Users will also find links to other Gilbert and Sullivan and Light Opera sites.
Neff, Lyle K.Public-Domain Opera Libretti and Other Vocal Texts. http://php.indiana.edu/~lneff/libretti.html.
This site is provides a huge archive (what seems like hundreds) of Operatic Libretti, mostly in their original languages. We can also access links to other sites with full-text libretti, and resources for other sacred and secular vocal music. There is a small and humorous archive of mistranslations. The site provides a huge annotated bibliography (some citations with links) regarding history, individual composers and works, writing styles, translation and translation issues. There were some broken links to individual libretti.
OperaGlass. http://opera.stanford.edu/main.html
OperaGlass, maintained by Stanford University, describes itself as an "opera information server on the World Wide Web." This site provides a large number of libretti, synopses, a list of over 1800 composers (with complete opera lists for each) discographies, and performance histories of individual operas, as well as originators of operatic roles, organized in subcategories by composer. Also included is an index for individual pages for opera professionals, and an index of fan pages. Resources are from all over the world, and not all in English. The site invites contributions.
The Opera Index. http://wwar.com/opera.html
A part of a site by World Wide Arts Research,This site provides alphabetically organized sub-directories, each leading to between 1 and 976 annotated resources for the listed topic- i.e.: Chinese Opera. You can also search this site or use it to research other topics. Drawbacks include a relatively limited number of subjects to search, and some broken links.
OperaStuff.com. http://www.operastuff.com
Offers a database with links to individual singers, both past and present, organized by type of voice (i.e.: countertenor, soprano, etc.), a list of opera companies that may be browsed by country, city, or company name, and a variety of links (including one for "operas with their own web sites." There is a list of opera related listservs. In addition to the information provided for the curious layperson or fan, this site provides information for professional singers.
OperaWeb. http://www.opera.it/Operaweb/en/home.html
This dual-language English/Italian site is designed to provide information for opera seasons all over Italy. This site also provides some fun and interesting resources, including: a discussion of the musical components of opera (geared toward the beginner); a glossary of opera terms; synopsis, musical analysis, and commentary on select operas; reviews of performances, cd\rquote s and books; a humorous (but complete) history of opera; curious anecdotes, and news.