Opera est un navigateur web regroupant de nombreuses fonctionnalités :

- Rapidité
- Sécurité
- Simplicité
- Puissance et innovation

- Onglets visuels
Profitez d'un meilleur aperçu des pages Web ouvertes grâce aux onglets visuels.

- Recherche sur le web intégrée
Lancez des recherches directement depuis le champ d'adresse grâce à la recherche sur le Web intégrée.

- Speed dial
Accédez instantanément à vos pages Web préférées à l'aide de la fonction Speed Dial.

- Opera link
Opera Link vous offre la possibilité de sauvegarder et de synchroniser de manière systématique vos données avec des téléphones et d'autres ordinateurs.

- Correcteur orthographique
Communiquez sans faire de fautes grâce au correcteur orthographique.

- Zoom
Bénéficiez d'un véritable confort de visualisation des pages Web grâce à un zoom sans pareil...

Autres versions disponibles :
- Opera pour Mac OS X, Linux, FreeBSD, Solaris...
- Opera 12.00 alpha
(Les versions Alpha ou Beta sont des logiciels de test, ce ne sont pas des versions stables, les tests permettent de corriger les derniers bugs).

Changes since Opera 11.60

User interface
Fixed
New web handlers tab in the Site Preferences dialog cut off, dialog not wide enough
Crash when clicking "Use master password to protect saved passwords" checkbox
Occasional crash when clicking a link or opening a new tab
Opera crashes when closing a tab that has the Star Menu opened
Can't close Star Menu after opening Folders
Opera crashes while closing feeds tab while dialog is open
Opera loses advanced download settings after restart
Opera Turbo Tooltip repeated multiple times
Wrong new reload icon
Zoom factor lost after selecting another message
Bookmark star icon is not refreshed when the page is removed from the bookmarks
Drop support for Fallback Background = 0 and Fallback Foreground = 0 in skins, fixes layout in mail window with some 3rd party skins
Ampersands on main menu in WinXP with Zune Theme
Titlebar remains when entering fullscreen mode (XP)

Display and scripting
Fixed
thepokerbay.org user profile crashes onload
Crash in Carakan on WebGL benchmark
Crash on applying 3025 background images
Out of range memory access when using subpixel rendering
Secure IFrame with URL to image lowers security level to "Unsecure" (breaks Paypal checkout)
Opera freezes when loading a big session with the Tab vault extension
NFL.com crashes with admuncher installed
Overwritten document.selectSingleNode not called if invoked by helper function
load events fire on LINK elements pointing to existing local resources (link rel="stylesheet" href="file://...")
Do not cache invalid UserJS source files ("blacklisting" user javascript files on parse error)
Cannot scroll down with mouse wheel over IFRAME with scrolling=no if smooth scrolling is enabled
stylesheet not applied due to malformed gzip content
Userjs confirmation on secure pages pops up on every load of the page
Incorrect value of elements in ArrayBufferView created with byteOffset to an ArrayBuffer
Captcha Images is not refreshing automatically after site refresh

Mail, news, chat
Fixed
Opera crashes on updating mail from version 9.27
Crashes if you unpin the last message in the "Pinned" view
After few seconds locked attachments disappear from a mail
Check/Send (Ctrl+K) does not activate all mail accounts
Sorting problem with ungrouped mail list
Mail unread count is wrong
Users not receiving new mails because of QRESYNC. Added a way to disable QRESYNC in incomingN.txt and automatically disable it if fails to sync with QRESYNC enabled

Network
Fixed
Crash in host resolver when closing browser after loading large number of tabs simultaneously
IPv6 IP literal URLs "Invalid"