== Opera 11.00 ==
Contrary to 10Starting with version 11.X release00, seems there's no Opera use a new in-house installer instead of the classic msi installer package available . A bit of information and the new command line silent switches can be found on the Opera Desktop Team blog: http://my.opera.com/desktopteam/blog/2010/10/22/the-new-opera-installer and on this forum thread : http://my.opera.com/community/forums/topic.dml?id=841872 The installer can be directly downloaded from: http://ftp.opera.com/pub/opera/win/1100/int/
Thanks to http://my.opera.com/community/forums/topic.dml?id=841872, here's the silent option for the "*Setup.exe" installer: