Reference Section Contents:

2015	Total	S 9	S 8	S 7	S 6	S 5	Other
December	3.7 %	2.6 %	0.6 %	0.2 %	0.1 %	0.1 %	0.1 %
November	3.9 %	2.6 %	0.7 %	0.3 %	0.1 %	0.1 %	0.1 %
October	3.8 %	1.9 %	1.0 %	0.3 %	0.1 %	0.1 %	0.4 %
September	3.6 %	0.3 %	2.6 %	0.4 %	0.2 %	0.1 %	0.0 %
August	4.5 %	0.1 %	2.4 %	0.7 %	0.1 %	1.0 %	0.2 %
July	4.9 %	0.1 %	2.2 %	0.8 %	0.2 %	1.2 %	0.4 %
June	3.8 %		2.4 %	0.6 %	0.2 %	0.3 %	0.3 %
May	3.8 %		2.7 %	0.6 %	0.2 %	0.1 %	0.2 %
April	3.8 %		2.5 %	0.7 %	0.2 %	0.2 %	0.2 %
March	3.9 %		2.3 %	0.8 %	0.3 %	0.2 %	0.3 %
February	3.9 %		2.3 %	0.9 %	0.3 %	0.2 %	0.1 %
January	3.8 %		2.2 %	1.0 %	0.3 %	0.3 %	0.0 %

2014	Total	S 8	S 7	S 6	S 5
December	3.7 %	1.9 %	1.0 %	0.3 %	0.2 %
November	3.7 %	1.8 %	1.4 %	0.3 %	0.2 %
October	3.9 %	1.1 %	2.1 %	0.4 %	0.3 %
September	3.6 %	0.3 %	2.6 %	0.4 %	0.3 %
August	3.7 %	0.2 %	2.9 %	0.3 %	0.3 %
July	3.5 %		2.7 %	0.5 %	0.3 %
June	3.7 %		2.8 %	0.6 %	0.3 %
May	3.8 %		3.0 %	0.7 %	0.3 %
April	4.0 %		2.8 %	0.8 %	0.4 %
March	3.9 %		2.5 %	0.9 %	0.5 %
February	4.0 %		2.5 %	1.0 %	0.5 %
January	3.9 %		2.3 %	1.1 %	0.5 %

2013	Total	S 7	S 6	S 5	S 4
December	3.8 %	2.2 %	1.1 %	0.5 %	0.0 %
November	4.0 %	2.0 %	1.4 %	0.6 %	0.0 %
October	3.8 %	1.0 %	2.1 %	0.7 %	0.0 %
September	3.9 %		3.1 %	0.8 %	0.0 %
August	3.9 %		3.0 %	0.9 %	0.0 %
July	3.6 %		2.8 %	0.8 %	0.0 %
June	3.9 %		3.0 %	0.9 %	0.0 %
May	4.0 %		2.9 %	1.0 %	0.0 %
April	4.0 %		2.8 %	1.1 %	0.0 %
March	4.1 %		2.8 %	1.2 %	0.1 %
February	4.1 %		2.7 %	1.3 %	0.1 %
January	4.2 %		2.7 %	1.4 %	0.1 %

2012	Total	S 6	S 5	S 4
December	4.2 %	2.6 %	1.5 %	0.1 %
November	4.4 %	2.6 %	1.7 %	0.1 %
October	4.3 %	2.3 %	1.9 %	0.1 %
September	4.2 %	1.9 %	2.2 %	0.1 %
August	4.0 %	1.4 %	2.5 %	0.1 %
July	3.9 %	0.2 %	3.6 %	0.1 %
June	4.1 %		4.0 %	0.1 %
May	4.3 %		4.2 %	0.1 %
April	4.5 %		4.4 %	0.1 %
March	4.4 %		4.3 %	0.1 %
February	4.5 %		4.4 %	0.1 %
January	4.3 %		4.2 %	0.1 %

2011	Total	S 5	S 4	S 3
December	4.2 %	4.1 %	0.1 %	0.0 %
November	4.2 %	4.1 %	0.1 %	0.0 %
October	4.2 %	4.0 %	0.2 %	0.0 %
September	4.0 %	3.8 %	0.2 %	0.0 %
August	3.8 %	3.6 %	0.2 %	0.0 %
July	3.6 %	3.4 %	0.2 %	0.0 %
June	3.7 %	3.5 %	0.2 %	0.0 %
May	4.0 %	3.6 %	0.3 %	0.1 %
April	4.1 %	3.7 %	0.3 %	0.1 %
March	4.0 %	3.6 %	0.3 %	0.1 %
February	4.1 %	3.6 %	0.4 %	0.1 %
January	4.0 %	3.5 %	0.4 %	0.1 %

2010	Total	S 5	S 4	S 3
December	3.8 %	3.2 %	0.5 %	0.1 %
November	4.0 %	3.1 %	0.7 %	0.2 %
October	3.9 %	3.1 %	0.7 %	0.1 %
September	3.7 %	2.9 %	0.7 %	0.1 %
August	3.5 %	2.6 %	0.8 %	0.1 %
July	3.4 %	2.3 %	1.0 %	0.1 %
June	3.6 %	1.4 %	2.1 %	0.1 %
May	3.5 %		3.3 %	0.2 %
April	3.7 %		3.5 %	0.2 %
March	3.7 %		3.5 %	0.2 %
February	3.8 %		3.5 %	0.3 %
January	3.7 %		3.4 %	0.3 %

2009	Total	S 4	S 3
December	3.6 %	3.3 %	0.3 %
November	3.8 %	3.4 %	0.4 %
October	3.8 %	3.3 %	0.5 %
September	3.6 %	3.0 %	0.6 %
August	3.3 %	2.6 %	0.7 %
July	3.3 %	2.4 %	0.9 %
June	3.1 %	1.7 %	1.4 %
May	3.0 %	0.9 %	2.1 %
April	3.0 %	0.9 %	2.1 %
March	3.1 %	1.0 %	2.1 %
February	3.0 %	0.2 %	2.8 %
January	3.0 %	0.1 %	2.9 %

2008	Total	S 3
December	2.7 %	2.7 %
November	2.7 %	2.7 %
October	2.8 %	2.8 %
September	2.7 %	2.7 %
August	2.6 %	2.6 %
July	2.5 %	2.5 %
June	2.6 %	2.6 %
May	2.4 %	2.4 %

Safari 9

Safari 9 was released in August, 2015.

New features:

Safari tab mute
Pinned sites
Airplay support
New tool: Responsive Design Mode - use it to see how a site will look on different devices and screen resolutions
Remapped keyboard shortcuts
Picture in Picture Support
CSS scroll snapping
Backdrop filters
ES6 enhancements - support for: classes, computed properties, weak set, number object, octal and binary literals, symbol objects, template literals
CSS enhancements - dropping browser prefixes for over 45 CSS properties

Safari 8

Safari 8 was released on October 16, 2014.

Safari 8 was released with OS X Yosemite.

New features:

WebGL support - allows developers to create 3D experiences that work by default in the browser
IndexedDB support - allows web developers to store structured data for web applications that work online or require large amounts of data to be cached client side
JavaScript Promises - enables developers to more naturally work with asynchronous programming patterns
CSS Shapes and Compositing - websites can now easily flow text around images and geometry shapes, and perform image compositing operations on DOM elements
Support for SPDY - an open networking protocol that websites can adopt to reduce page load latency and improve security
Support for HTML5 Premium Video - websites can now use EME to deliver encrypted, energy-efficient video in the browser
Search with DuckDuckGo
Stronger privacy features
Increased speed and efficiency
Enhanced iCloud integration
Updated design

Safari 7

Safari 7/6.1 was released on June 10, 2013.

Safari 7 for OS X Mavericks and Safari 6.1 (for Lion and Mountain Lion) were released along with OS X Mavericks on October 22, 2013.

New features:

Improved JavaScript performance and memory usage
New look for Top sites and the Sidebar
iCloud Keychain - Stores/generates random passwords for use online. Can also safely store your credit card information
Shared Links feature - collects all the links that have been shared by people you follow in Twitter
Power Saver feature - pauses any Plugins when they are not in use

Safari 6

Safari 6 was released on July 25, 2012.

Apple has stated: "Safari 6 is available for Mountain Lion and Lion. Safari 5 continues to be available for Windows."

New features:

iCloud tabs
Web audio API - allows you to create audio effects in interactive web applications
Support for CSS filters
Better HTML5 support - timed text tracks, media synchronization
Improved JavaScript support - ECMA 262 version 5.1
Private browsing detection
Redesigned Web inspector
Reader Customization

Safari 6 is integrated into the OS X Mountain Lion - It is not available for download from the Apple website or other sources.

Apple released Safari 6 via Software Update for users of OS X Lion. It has not been released for OS X versions prior to Lion or for Windows.

Safari 5

Safari 5 was released on June 7, 2010.

Safari 5 is available for Mac and Windows.

New features:

Nitro JavaScript Engine - runs JavaScript up to 30% faster than Safari 4
Uses DNS pre-fetching to speed up page loads - Like Google's Chrome browser
Safari Reader - gives a user the ability to read articles on the web without distraction (remove ads and all; leaves only the content of the article)
HTML5 features - support for full-screen video and closed-captioning on HTML5 video, Geolocation, sectioning elements, draggable attribute, forms validation, Ruby, AJAX History, EventSource, and WebSockets
Secure extensions - support secure and signed extensions that run in the browser

Older Safari Versions

Safari 4 (for Mac and Windows) - Released in June 2009.

Safari 3 (for Mac and Windows) - Released in October 2007.

Safari 2 (for Mac) - Released in April 2005.

Safari 1 (for Mac) - Released in June 2003.

Opera Browser

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The Opera Browser

Opera started out as a research project in Norway's telecom company, Telenor, in 1994.

The Opera browser is free, and it is known for its performance, standards compliance, and small size.

Opera Statistics

The following figures are based on W3Schools' users, and are extracted from the Browser Statistics:

2015	Total	O 34	O 33	O 32	O 31	O 30	O 29	O 28	O 27	O 26	O 12	O Mini	Other
December	1.5 %	0.5 %	0.3 %	0.0 %	0.0 %	0.0 %	0.0 %	0.0 %	0.0 %	0.0 %	0.1 %	0.3 %	0.3 %
November	1.5 %		0.7 %	0.1 %	0.0 %	0.0 %	0.0 %	0.0 %	0.0 %	0.0 %	0.1 %	0.4 %	0.2 %
October	1.4 %			0.8 %	0.0 %	0.0 %	0.0 %	0.0 %	0.0 %	0.0 %	0.1 %	0.4 %	0.1 %
September	1.4 %			0.3 %	0.5 %	0.0 %	0.0 %	0.0 %	0.0 %	0.0 %	0.1 %	0.5 %	0.0 %
August	2.2 %				0.6 %	0.2 %	0.0 %	0.0 %	0.0 %	0.0 %	0.4 %	0.5 %	0.5 %
July	2.5 %					0.7 %	0.0 %	0.0 %	0.0 %	0.0 %	0.5 %	0.6 %	0.7 %
June	1.8 %					0.5 %	0.3 %	0.0 %	0.0 %	0.0 %	0.3 %	0.5 %	0.2 %
May	1.6 %						0.7 %	0.1 %	0.0 %	0.0 %	0.2 %	0.4 %	0.2 %
April	1.5 %						0.1 %	0.7 %	0.0 %	0.0 %	0.2 %	0.4 %	0.1 %
March	1.5 %							0.5 %	0.3 %	0.0 %	0.1 %	0.5 %	0.1 %
February	1.5 %								0.9 %	0.0 %	0.1 %	0.5 %	0.0 %
January	1.6 %								0.1 %	0.7 %	0.1 %	0.5 %	0.2 %

2014	Total	O 26	O 25	O 24-22	O 21-18	O 12	O Mini	Other
December	1.6 %	0.7 %	0.0 %	0.0 %	0.0 %	0.1 %	0.5 %	0.3 %
November	1.6 %	0.2 %	0.6 %	0.0 %	0.1 %	0.2 %	0.5 %	0.0 %
October	1.6 %		0.3 %	0.5 %	0.0 %	0.2 %	0.6 %	0.0 %
September	1.6 %			0.6 %	0.1 %	0.2 %	0.7 %	0.0 %
August	1.8 %			0.6 %	0.1 %	0.3 %	0.7 %	0.1 %
July	1.7 %			0.5 %	0.0 %	0.2 %	0.7 %	0.3 %
June	1.8 %				0.1 %	0.3 %	0.8 %	0.6 %
May	1.8 %				0.3 %	0.4 %	0.7 %	0.4 %
April	1.8 %				0.6 %	0.4 %	0.8 %	0.0 %
March	1.8 %				0.6 %	0.5 %	0.7 %	0.0 %
February	1.9 %				0.6 %	0.5 %	0.7 %	0.1 %
January	1.8 %				0.4 %	0.5 %	0.7 %	0.2 %

2013	Total	O 18	O 17	O 16	O 15	O 12	O 11	O Mini	Other
December	1.9 %	0.4 %	0.1 %	0.0 %	0.0 %	0.5 %	0.0 %	0.7 %	0.2 %
November	1.8 %	0.2 %	0.2 %	0.0 %	0.0 %	0.6 %	0.0 %	0.7 %	0.1 %
October	1.7 %		0.2 %	0.1 %	0.0 %	0.6 %	0.0 %	0.6 %	0.2 %
September	1.7 %					0.9 %	0.0 %	0.8 %	0.0 %
August	1.8 %					0.7 %	0.1 %	0.7 %	0.3 %
July	1.6 %					0.8 %	0.1 %	0.7 %	0.0 %
June	1.7 %					1.0 %	0.1 %	0.6 %	0.0 %
May	1.6 %					1.0 %	0.1 %	0.6 %	0.0 %
April	1.7 %					1.0 %	0.1 %	0.5 %	0.1 %
March	1.8 %					1.1 %	0.1 %	0.6 %	0.0 %
February	1.8 %					1.1 %	0.1 %	0.5 %	0.1 %
January	1.9 %					1.1 %	0.1 %	0.6 %	0.1 %

2012	Total	O 12	O 11	O 10	O Mini	Other
December	2.1 %	1.2 %	0.1 %	0.0 %	0.6 %	0.2 %
November	2.0 %	1.3 %	0.1 %	0.0 %	0.5 %	0.1 %
October	2.0 %	1.2 %	0.2 %	0.0 %	0.5 %	0.1 %
September	2.1 %	1.2 %	0.2 %	0.0 %	0.6 %	0.1 %
August	2.2 %	1.2 %	0.3 %	0.0 %	0.7 %	0.0 %
July	2.1 %	1.1 %	0.4 %	0.0 %	0.6 %	0.0 %
June	2.2 %	0.5 %	1.1 %	0.0 %	0.6 %	0.0 %
May	2.2 %	0.1 %	1.5 %	0.1 %	0.5 %	0.0 %
April	2.3 %	0.1 %	1.6 %	0.1 %	0.5 %	0.0 %
March	2.3 %	0.1 %	1.6 %	0.1 %	0.5 %	0.0 %
February	2.3 %	0.1 %	1.6 %	0.1 %	0.5 %	0.0 %
January	2.4 %	0.1 %	1.7 %	0.1 %	0.5 %	0.0 %

2011	Total	O 11	O 10	O Mini	Other
December	2.5 %	1.8 %	0.1 %	0.5 %	0.1 %
November	2.4 %	1.8 %	0.1 %	0.5 %	0.0 %
October	2.4 %	1.8 %	0.1 %	0.5 %	0.0 %
September	2.2 %	1.7 %	0.1 %	0.4 %	0.0 %
August	2.3 %	1.7 %	0.1 %	0.4 %	0.1 %
July	2.4 %	1.7 %	0.1 %	0.5 %	0.1 %
June	2.4 %	1.7 %	0.2 %	0.4 %	0.1 %
May	2.4 %	1.8 %	0.2 %	0.4 %	0.0 %
April	2.6 %	1.9 %	0.2 %	0.4 %	0.1 %
March	2.5 %	1.9 %	0.2 %	0.3 %	0.1 %
February	2.5 %	1.8 %	0.3 %	0.3 %	0.1 %
January	2.5 %	1.7 %	0.4 %	0.3 %	0.1 %

2010	Total	O 11	O 10	O 9.5	Other
December	2.2 %	0.7 %	1.4 %	0.1 %	0.0 %
November	2.3 %	0.1 %	2.1 %	0.1 %	0.0 %
October	2.2 %		2.1 %	0.1 %	0.0 %
September	2.2 %		2.0 %	0.1 %	0.1 %
August	2.3 %		2.1 %	0.1 %	0.1 %
July	2.3 %		2.1 %	0.2 %	0.0 %
June	2.1 %		1.9 %	0.2 %	0.0 %
May	2.2 %		2.0 %	0.2 %	0.0 %
April	2.2 %		2.0 %	0.2 %	0.0 %
March	2.2 %		1.9 %	0.3 %	0.0 %
February	2.1 %		1.8 %	0.3 %	0.0 %
January	2.2 %		1.8 %	0.4 %	0.0 %

2009	Total	O 10	O 9.5	O 9	Other
December	2.3 %	1.8 %	0.4 %	0.1 %	0.0 %
November	2.3 %	1.7 %	0.5 %	0.1 %	0.0 %
October	2.3 %	1.5 %	0.7 %	0.1 %	0.0 %
September	2.2 %	1.2 %	0.9 %	0.1 %	0.0 %
August	2.1 %	0.4 %	1.6 %	0.1 %	0.0 %
July	2.1 %	0.3 %	1.7 %	0.1 %	0.0 %
June	2.1 %	0.2 %	1.7 %	0.1 %	0.1 %
May	2.2 %	0.1 %	1.9 %	0.1 %	0.1 %
April	2.2 %	0.1 %	1.9 %	0.1 %	0.1 %
March	2.3 %	0.1 %	1.9 %	0.2 %	0.1 %
February	2.2 %	0.1 %	1.9 %	0.2 %	0.0 %
January	2.3 %	0.1 %	1.9 %	0.2 %	0.1 %

2008	Total	O 10	O 9.5	O 9	Other
December	2.4 %	0.1 %	2.0 %	0.2 %	0.1 %
November	2.3 %		1.9 %	0.3 %	0.1 %
October	2.2 %		1.7 %	0.4 %	0.1 %
September	2.0 %		1.5 %	0.4 %	0.1 %
August	2.1 %		1.5 %	0.5 %	0.1 %
July	1.9 %		1.3 %	0.6 %	0.0 %
June	1.7 %		1.0 %	0.6 %	0.1 %
May	1.5 %		0.1 %	1.3 %	0.1 %

Opera 34

Opera 34 was released on December 8, 2015.

Opera 34 is available for Mac, Linux and Windows.

New features:

Improvements to Opera Turbo mode
Improvements to download manager
The Discover feature is now the News feed
Support for MSE audio (audio/mpeg and audio/aac mimetypes) - enables playback from Google Play Music and similar services
New share button on Mac to share a webpage through apps
Updated support for the latest Chromium/Blink version 47

Opera 33

Opera 33 was released on October 27, 2015.

Opera 33 is available for Mac, Linux and Windows.

New features:

New product logo - The 3-dimensional "O"
Turbo 2 compression - compresses images/videos, so users can surf the web fluidly even on slow internet
Cleaned up the look of Opera on Mac
Added support for H264 video and MP3 audio codecs on Linux
Updated support for the latest Chromium/Blink release, version 46

Opera 32

Opera 32 was released on September 15, 2015.

Opera 32 is available for Mac, Linux and Windows.

New features:

Boosted privacy
Synchronization functionality
Password sync
New tree view mode for the bookmark view
Option to install animated themes for the browser's Speed Dial screen
Improvements to heart menu
Updated support for the latest Chromium/Blink release, version 45

Opera 31

Opera 31 was released on August 4, 2015.

Opera 31 is available for Mac, Linux and Windows.

New features:

Faster startup time - 70% faster for Opera on computers
Discover gets a better layout
Extends the browser's sync feature to also include typed history

Opera 30

Opera 30 was released on June 9, 2015.

Opera 30 is available for Mac, Linux and Windows.

New features:

Faster switching between tabs - added a button to cycle through tabs
Support for sidebar extensions to display contents in the browser's sidebar panel
Option to undo the deletion of bookmarks
Defense against Logjam

Opera 29

Opera 29 was released on April 28, 2015.

Opera 29 is available for Mac, Linux and Windows.

New features:

Sync open tabs between devices - access your recently visited tabs from other devices (using sync technology)
Sound notification to the tab favicon - to quickly locate any tab that is making a noise

Opera 28

Opera 28 was released on March 10, 2015.

Opera 28 is available for Mac, Linux and Windows.

New features:

Bookmark Syncing - now you can sync bookmarks between your computer and your phone/tablet
Bookmark suggestions are displayed when typing in the combined search and address bar
Better integration with Mac OS

Opera 27

Opera 27 was released on January 27, 2015.

Opera 27 is available for Mac, Linux and Windows.

New features:

Navigation Bar at the bottom - improves navigation between Speed Dial, Bookmarks, and Discover sections
Tab Preview is back

Opera 26

Opera 26 was released on December 3, 2014.

Opera 26 is available for Mac, Linux and Windows.

New features:

Bookmark sharing - share links with friends for up to 14 days
Ability to migrate bookmarks from another web browser to Opera
New print preview - users can now preview their print layout right in the browser
Better integrated with Mac OS X Yosemite

Opera 25

Opera 25 was released on October 15, 2014.

Opera 25 is available for Mac, Linux and Windows.

New features:

New visual bookmarks - use the "heart" icon to bookmark by image
64-bit by default for Mac
New Start page
Integrated PDF Viewer
A new Gaming category has been added in Discovery

Opera 24

Opera 24 was released on September 17, 2014.

Opera 24 is available for Mac, Linux and Windows.

New features:

Tab preview
High DPI support
Updated Chromium to 37

Opera 23

Opera 23 was released on August 12, 2014.

Opera 23 is available for Mac and Windows.

New features:

New options to heart button in the address bar
Support for unprefixed CSS transforms
Improved stability
Updated Chromium to 36

Opera 22

Opera 22 was released on June 03, 2014.

Opera 22 is available for Mac and Windows.

New features:

New themes - 5 new themes inspired by Opera's birthplace, Norway
Silent updates on Windows
Updated Chromium to 35

Opera 21

Opera 21 was released on May 14, 2014.

Opera 21 is available for Mac and Windows.

New features:

AdBlock is working again when opening pages in new tabs
Support for "Aura" (a way to accelerate the entire browser experience using your PC's graphics card)

Opera 20

Opera 20 was released on March 04, 2014, and includes updates to the latest Chromium release, version 33.

Opera 20 is available for Mac and Windows.

New features:

Dragable bookmarks - Drag your tabs to the bookmarks bar to save them. Drag your bookmarks onto your Speed Dial to create new entries
New Speed Dial entries - Change the look of your Speed Dial entries in the advanced settings

Opera 19

Opera 19 was released on January 28, 2014, and includes updates to the latest Chromium release, version 32.

Opera 19 is available for Mac and Windows.

New features:

Bookmarks bar - Save, organize, and easily access pages from the bookmarks bar
Theme creation - Upload images or use images from the web to customize the look of your browser

Opera 18

Opera 18 was released on November 19, 2013, and includes updates to the latest Chromium release, version 31.

Opera 18 is available for Mac and Windows.

New features:

Media access - Allow websites to access your camera/microphone, including support for HTML5 media access
Themes - Themes from addons.opera.com can be installed through the theme manager
Rocker gestures - Navigate back/forward in a tab's history by rocking your fingers across your mouse buttons
Tab enhancement - You can now drag tabs between open windows

Opera 17

Opera 17 was released on October 10, 2013, and includes updates to the latest Chromium release, version 30.

Opera 17 is available for Mac and Windows.

New features:

Pinned tabs - Allows you to pin tabs on the tab bar (can help prevent you from closing tabs accidentally)
Custom search - Lets you add custom search engines to your combined search and address bar

Opera 16

Opera 16 was released on August 27, 2013, and includes updates to the latest Chromium release, version 29.

Opera 16 is available for Mac and Windows.

New features:

Autofill - Allows you to securely store your addresses, phone numbers, email addresses and credit cards for use online
Geolocation - Lets you share your location information with websites that request it

Opera 15

Opera 15 was released on July 2, 2013.

Opera 15 is available for Mac and Windows.

Opera 15 is a major reinvention for Opera. The browser's source code will be based on Chromium and Blink, a fork of the WebKit rendering engine. Everything for this browser is new:

New rendering engine based on WebKit
New user interface
New capabilities
New features
Improved site compatibility
Silent auto updates

New features:

Combined address and search bar
Enhanced Speed Dial - Allows you to combine Speed Dial entries into groups
Stash feature - Records the location, meta data, and a screenshot of a page, and places this information into a collapsable list entry on the browser's Start Page, that can be searched by keyword and/or scanned visually by screenshot
Discover - Displays news and topical content that can be filtered by category or location/language
Off-Road mode - Adopts the server-side compression technology used by Opera Mobile

Opera 12

Opera 12 was released on June 13, 2012.

Opera 12 is available for Linux, Mac, FreeBSD, and Windows.

New features:

Improved speed
Camera support - First browser to support the W3C getUserMedia specification
Themes - Opera 12 introduces lightweight themes
Better Security Badge
Improved HTML5 and CSS3 Support - such as HTML5 drag and drop and CSS3 transitions and animation
Five new languages - Arabic, Persian, Urdu and Hebrew and Kazakh
A page zoom slider
Do Not Track support

Opera 11.60

Opera 11.60 was released on December 6, 2011.

Opera 11.60 is available for Linux, Mac, FreeBSD, and Windows.

New features:

New browser engine - Faster and more stable Internet experience
New mail design - A cleaner layout, message grouping, easier navigation, and a more intuitive view in your inbox
Revamped address field - To add pages to your bookmarks or Speed Dial, just press the star in the address field
Improved support for HTML5, CSS3, SVG

Opera 11.50

Opera 11.50 was released on June 28, 2011.

Opera 11.50 is available for Linux, Mac, FreeBSD, and Windows.

New features:

Sleeker user interface
Added functionality for Opera's pioneering Speed Dial feature - Embed your Sped Dial with extensions that keep you updated instantly instead of thumbnails linking to your favorite links
Password Synchronization - Let you synchronize password securely and safely with other Opera browsers
Faster graphics performance
Improved support for HTML5, CSS3, SVG

Opera 11.10

Opera 11.10 was released in April 2011.

Opera 11.10 is available for Linux, Mac, FreeBSD, and Windows.

New features:

Speed Dial 2.0 - Your favorite pages now have clearer previews, and dials can even dynamically show live content for websites. There is now no limit to how many dials you can use
Opera Turbo enhanced - Boost your browsing speed on crowded Wi-Fi hotspots, tethered mobile phones or dial-up connections
Simple Plug-in installation - With this release, the most popular plug-in, Adobe Flash Player, installs seamlessly and automatically
New CSS3 Support - Opera now supports CSS3 linear gradients and multiple columns

Opera 11

Opera 11 was released in December 2010.

Opera 11 is available for Linux, Mac, FreeBSD, and Windows.

New features:

Opera Presto 2.7 rendering engine - Better support for CSS3 and HTML5
Tab Stacking - Often we open a lot of tabs and find it difficult to adjust and manage. Opera 11 lets you drag one tab over another to create groups of tabs. Now you can keep dozens of webpages open, organized, and under control
Secure address field - An improved address field makes it easier to stay safe on the Web, and it now hides the complexity of long web addresses. It also provides more security information to help you stay safe when browsing; just click the badge for the website to see security information about the site you are visiting
Visual Mouse Gestures - Allows common browser actions with a quick flick of your mouse. Holding down the right mouse button on a web page now shows a visual guide that indicates how to perform the available gestures
Opera installer for Microsoft Windows platforms - Opera has a new installer written in-house, which is much faster than the previously used MSI installer.
New Extensions & Mail Panel - A bunch of new extensions and a new mail panel for a quick usage of email

Older Opera Versions

Opera 10.5 - Released in March 2010.

Opera 10.0 - Released in September 2009.

Opera 9.5 - Released in June 2008.

Opera 9.0 - Released in June 2006.

Opera 8.5 - Released in September 2005.

Opera 8.0 - Released in April 2005.

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