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Opera is a web browser created and maintained by the software company Opera Software. It was first launched publically in 1996, and is the second oldest of the top five web browsers in Browser War II, as well as holding fifth in that same browser war. Despite being released during the First Browser War, it was not a contender.

1996-2000[]

Opera 2[]

Opera 2.0 was released on April 22, 1996.

Opera 2.1 was released on December 12, 1996.

Opera 2.12 was released on February 12, 1997.

Opera 3[]

Opera 3.0 was released on December 1, 1997.

Opera 3.5 was released on Nevember 18, 1998.

Opera 3.6 was released on May 6, 1999.

Opera 4[]

Opera 4.0 was released on June 28, 2000.

Opera 5[]

Opera 5.0 was released on December 6, 2000.

2001-2006[]

Opera 5[]

Opera 5.1 was released on April 10, 2001.

Opera 6[]

Opera 6.0 was released on December 18, 2001.

Opera 6.1 was released on October 31, 2002.

Opera 7[]

Opera 7.0 was released on January 28, 2003.

Opera 7.1 was released on April 11, 2003.

Opera 7.2 was released on September 23, 2003.

Opera 7.3 was released on March 23, 2004.

Opera 7.5 was released on May 12, 2004.

Opera 7.55 was released on January 9, 2005.

Opera 8[]

Opera 8.0 was released on April 19, 2005.

Opera 8.5 was released on September 20, 2005.

Opera 9[]

Opera 9.0 was released on June 20, 2006.

Opera 9.1 was released on December 18, 2006.

2007-2011[]

Opera 9[]

Opera 9.2 was released on April 11, 2007.

Opera 9.5 was released on June 12, 2008.

Opera 9.6 was released on October 8, 2008.

Opera 10[]

Opera 10.0 was released on September 1, 2009.

Opera 10.1 was released on November 23, 2009.

Opera 10.5 was released on March 2, 2010.

Opera 10.6 was released on July 1, 2010.

Opera 11[]

Opera 11.0 was released on December 16, 2010.

Opera 11.1 was released on April 12, 2011.

Opera 11.5 was released on June 28, 2011.

The current release is 11.52.

The current beta release is 11.60b.

The current alpha release is 12.00a.

2012-present*[]

Opera 12[]

Opera 12 was released on Wednesday, May 23, 2012 6:57:42 PM.

The current alpha release is 12.50a.

*August 29, 2012.

Acid Tests[]

Opera successfully passed the Acid and Acid2 tests, and recieved 100/100 on the Acid3 test.

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