Presto
Browser engine
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Presto was the browser engine of the Opera web browser from the release of Opera 7 on 28 January 2003, until the release of Opera 15 on 2 July 2013, at which time Opera switched to using the Blink engine that was originally created for Chromium.... Wikipedia
Initial release date: January 28, 2003
Stable release: 2.12.423 / 16 March 2015; 9 years ago