the year 1996, if you mean the web-browser named Opera.
Second reply
Musical Opera was created in Italy in the late-16th century. The first opera is generally thought to be Dafne, by Jacopo Peri. The music for this opera has been lost. The earliest opera for which we have the music and which receives occasional performances is L'Orfeo by Claudio Monteverdi, first performed in Mantua, Italy, in 1607.
Pacific Opera was created in 2003.
The Flying Opera was created in 2008.
The Threepenny Opera was created in 1928.
Scottish Opera was created in 1962.
Opera Delaware was created in 1944.
Opera IX was created in 1988.
Opera North was created in 1978.
Amato Opera was created in 1948.
Soupe Opera was created in 1991.
O'Donoghue's Opera was created in 1965.
Pinchgut Opera was created in 2002.
Teatro Opera was created in 1936.