Opera’s archived version history 1-12

Last update: 2013-02-05

This document provides a quick historical reference to Opera versions, release dates, release types, rendering engines, JavaScript engines, user agent/id string formats, features, and improvements. Opera final releases are highlighted in light yellow, with bold text. Versions are hyperlinked to their respective Windows changelog where possible in the “Version number” column of each table.

Opera 12 series

Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 12.15 2013-04-04 Security & Stability Marlin Opera Presto 2.12 Carakan
Opera 12.14 2013-02-05 Security & Stability Marlin Opera Presto 2.12 Carakan
Opera 12.13 2013-01-30 Security & Stability Marlin Opera Presto 2.12 Carakan
Opera 12.12 2012-12-18 Security & Stability Marlin Opera Presto 2.12 Carakan
Opera 12.11 2012-11-20 Security & Stability Marlin Opera Presto 2.12 Carakan
Opera 12.10 2012-11-06 Final Marlin Opera Presto 2.12 Carakan

New and improved features:

  • Improved operating system compatibility
  • Extensions support enhanced and expanded
  • High-resolution Display Support
  • SPDY
  • CSS3 Gradients, Transitions, Animations, and Transforms
  • CSS Site Compatibility
  • Fullscreen API
  • Page Visibility API
  • WebSockets
  • ICC Profiles
Opera 12.10b 2012-10-02 Beta Marlin Opera Presto 2.12 Carakan
Opera 12.02 2012-08-30 Security & Stability Wahoo Opera Presto 2.10 Carakan
Opera 12.01 2012-08-02 Security & Stability Wahoo Opera Presto 2.10 Carakan
Opera 12.00 2012-06-14 Final Wahoo Opera Presto 2.10 Carakan

New and improved features:

  • Out-of-Process plug-ins
  • 64-bit Mac and Windows versions
  • Mail and address field interface enhancements
  • Updated skinning system – Themes
  • Enhanced Windows and Tabs API
  • Right-to-Left (RTL) Script Support
  • Improved CSS calculation precision
  • Improved Media Query support
  • HTML5 Drag-and-Drop
  • opera:cpu to monitor CPU usage of Opera processes
  • Support for getUserMedia
  • CSS3 Animations and Transitions
  • Do-Not-Track header
  • Support for Paged Overflow
  • Cross-Origin Resource Sharing (CORS)
  • Opera Unite, Opera Widgets and Opera voice discontinuation
  • Removal of BitTorrent and IRC on Opera for Mac
Opera 12.00b 2012-04-26 Beta Wahoo Opera Presto 2.10 Carakan
Opera 12.00a 2011-10-13 Alpha Wahoo Opera Presto 2.9 Carakan

Opera 11 series

Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 11.64 2012-05-10 Security & Stability Tunny Opera Presto 2.10 Carakan
Opera 11.62 2012-03-27 Security & Stability Tunny Opera Presto 2.10 Carakan
Opera 11.61 2012-01-24 Security & Stability Tunny Opera Presto 2.10 Carakan
Opera 11.60 2011-12-06 Final Tunny Opera Presto 2.10 Carakan

New and improved features:

  • Opera Presto 2.10 rendering engine
  • Featherweight address field with star menu
  • Improved user interface for Mail
  • Grouping and pinning of messages
  • New mail settings dialog
  • HTML5 parser
  • Improved HTML5 media support
  • DOM API for HTML5 microdata
  • HTML5 custom scheme and content handlers
  • ECMAScript 5.1
  • Improved support for XMLHttpRequest Level 2
  • Full support for radial-gradient
  • Support for font-relative length rem
  • Support for the image-rendering property
Opera 11.60b 2011-11-10 Beta Tunny Opera Presto 2.10 Carakan
Opera 11.52 2011-10-19 Security & Stability Swordfish Opera Presto 2.9 Carakan
Opera 11.51 2011-08-31 Security & Stability Swordfish Opera Presto 2.9 Carakan
Opera 11.50 2011-06-28 Final Swordfish Opera Presto 2.9 Carakan

New and improved features:

  • Opera Presto 2.9 rendering engine
  • Opera Dragonfly 1.0 (2011-05-05)
  • Opera Link: Password synchronization
  • Opera Next: Dev channel for snapshots
  • Plug-in installation wizard (Mac)
  • Speed Dial extensions
  • Improved user interface
  • Improved deep nesting of CSS quotes
  • Improved Opera Widgets support
  • Improved DOM event handling
  • Improved Selectors API support
  • HTML5 dataset element support
  • HTML5 Session history & navigation support
  • HTML5 and SVG classList attribute support
  • HTML5 time element support
Opera 11.50b 2011-05-31 Beta Swordfish Opera Presto 2.8 Carakan
Opera 11.11 2011-05-18 Security & Stability Barracuda Opera Presto 2.8 Carakan
Opera 11.50a 2011-05-03 Alpha Swordfish Opera Presto 2.8 Carakan
Opera 11.10 2011-04-12 Final Barracuda Opera Presto 2.8 Carakan

New features:

  • Opera Presto 2.8 rendering engine
  • Plug-in installation wizard (Windows)
  • Added Search field to error pages
  • Added support for SOCKS Protocol v.5
  • Opera CSS cursor property values:
    • "zoom-in"
    • "zoom-out"
  • User JavaScript:
    • Added event: BeforeCSS
    • Added event: AfterCSS
  • URL Filter API for Opera extensions
  • WebP
  • W3C CSS Multi-column Layout
  • W3C CSS Device Adaptation (viewport)
  • W3C CSS3 Gradients (partial support)
  • W3C Web Open Font Format (WOFF)
  • W3C File API (partial support)

Improvements:

  • Declarative UI
  • Opera Dragonfly beta 1
  • Opera Mail:
    • Phrase searching support
    • CJK search improvements
    • Mail panel improvements
  • Speed Dial:
    • Added a new “logo finder” to dials
    • Added ability to create custom titles
    • Added animation
    • Added column number adjustment
    • Added zoom
    • Improved flow layout
    • New dialog when adding/editing
    • Sites can now reload Speed Dials automatically
    • The thumbnail/icon can now be chosen
Opera 11.10b 2011-03-17 Beta Barracuda Opera Presto 2.8 Carakan
Opera 11.10a 2011-02-17 Alpha Barracuda Opera Presto 2.8 Carakan
Opera 11.01 2011-01-27 Security Kjevik Opera Presto 2.7 Carakan
Opera 11.00 2010-12-16 Final Kjevik Opera Presto 2.7 Carakan

New features:

  • Bookmarks bar
  • Opera extensions
  • Presto 2.7 rendering engine:
    • WebSockets support
    • Improved CSS3 Paged Media support
    • Improved CSS3 Text support
    • Improved Encodings support
    • Improved HTML5 support
  • Search predictions
  • Tab stacking
  • Visual mouse gestures

Improvements:

  • Address field
  • Auto-update
  • Carakan JavaScript engine
  • Mail panel
  • Plug-in loading
  • User JavaScript
Opera 11.00b 2010-11-23 Beta Kjevik Opera Presto 2.7 Carakan
Opera 11.00a 2010-10-21 Alpha Kjevik Opera Presto 2.7 Carakan

Opera 10 series

Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 10.63 2010-10-12 Security Evenes Opera Presto 2.6 Carakan
Opera 10.62 2010-09-09 Security Evenes Opera Presto 2.6 Carakan
Opera 10.61 2010-08-12 Security Evenes Opera Presto 2.6 Carakan
Opera 10.70lr 2010-08-03 Lab release Evenes Opera Presto 2.6 Carakan
Opera 10.60 2010-07-01 Final Evenes Opera Presto 2.6 Carakan

New features:

  • Presto 2.6 rendering engine:
    • Geolocation services
    • Offline Web Applications
    • Web Workers
    • WebM
Opera 10.11
(for UNIX)		 2010-06-23 Security Peregrine Opera Presto 2.2 Futhark
Opera 10.54 2010-06-21 Security Evenes Opera Presto 2.5 Carakan
Opera 10.60b1 2010-06-16 Beta Evenes Opera Presto 2.5 Carakan
Opera 10.60a 2010-05-31 Alpha Evenes Opera Presto 2.5 Carakan
Opera 10.53 2010-04-30 Security Evenes Opera Presto 2.5 Carakan
Opera 10.52 2010-04-27 Stability Evenes Opera Presto 2.5 Carakan
Opera 10.51 2010-03-22 Security Evenes Opera Presto 2.5 Carakan
Opera 10.50 2010-03-02 Final Evenes Opera Presto 2.5 Carakan

New features:

  • Carakan JavaScript engine
  • Presto 2.5 rendering engine
    • Native JSON support
    • CSS 2.1 visibility: collapse
    • CSS3 border-radius property
    • CSS3 Backgrounds and Borders
    • CSS3 Transforms and Transitions
    • HTML5 <video> element
    • Web Storage: session and local
    • Web SQL Databases
  • Opera Widgets for Desktop
    • Application mode
    • Context menu
    • Control buttons
    • Debugging
    • Export wizard
    • Managing passwords
    • Notification system
    • Widget download process
    • Widget File I/O
    • Widget install/uninstall process
  • Vega graphics library
  • Better integration with native operating systems
  • Download accelerator software compatibility
  • Private browsing
  • Non-modal notification messages
  • Opera “O” menu tab

Improvements:

  • Search box
  • Address box
  • Cache interface
  • Opera Dragonfly debugger
  • Inline page search
  • Password manager
  • Zoom facility
Opera 10.50b2 2010-02-24 Beta Evenes Opera Presto 2.5 Carakan
Opera 10.50b1 2010-02-11 Beta Evenes Opera Presto 2.5 Carakan
Opera 10.50a 2009-12-22 Alpha Evenes Opera Presto 2.5 Carakan
Opera 10.20a 2009-11-25 Alpha Peregrine Opera Presto 2.2 Futhark
Opera 10.10 2009-11-23 Final Peregrine Opera Presto 2.2 Futhark
New feature: Opera Unite

  • Opera Unite applications:
    • File Sharing
    • Fridge
    • Media Player
    • Messenger
    • Photo Sharing
    • Web Server
Opera 10.01 2009-10-28 Security Peregrine Opera Presto 2.2 Futhark
Opera 10.20lr 2009-10-15 Labs release Peregrine Opera Presto 2.2 Futhark

Feature: Opera Widgets for Desktop

  • Widget management and lifespans are separated from the Opera desktop browser.
Opera 10.10b1 2009-10-14 Beta Peregrine Opera Presto 2.2 Futhark
Opera 10.00 2009-09-01 Final Peregrine Opera Presto 2.2 Futhark
New features:

  • Acid3 test: 100/100, pixel-perfect
  • Auto update
  • Crashlogging tool (integrated)
  • CSS Selectors API support
  • FPS in SVG support
  • HTML authoring in Opera Mail
  • Inline spell check
  • New regular expression engine
  • New skin elements
  • Opera Dragonfly: HTTP header inspection
  • Opera Dragonfly: DOM editing
  • Opera Presto 2.2 rendering engine
  • Opera Speed Dial configuration options
  • Opera Turbo
  • Pretty-printing of unstyled XML
  • RGBA & HSLA opacity
  • SVG fonts in HTML support
  • Visual tabs
  • Web fonts support
Opera 10.00b3 2009-08-13 Beta Peregrine Opera Presto 2.2 Futhark
Opera 10.00b2 2009-07-16 Beta Peregrine Opera Presto 2.2 Futhark
Opera 10.10lr 2009-06-16 Lab release Peregrine Opera Presto 2.2 Futhark

New feature: Opera Unite

  • Opera Unite gives you the power to connect with others directly and to collaborate and share information from your computer without storing any data on external servers.
Opera 10.00b1 2009-06-03 Beta Peregrine Opera Presto 2.2 Futhark
Opera 10.00a 2008-12-12 Alpha Peregrine Opera Presto 2.2 Futhark

Opera 9 series

Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 9.64 2009-03-03 Security Kestrel Opera Presto 2.1.1 Futhark
Opera 9.63 2008-12-16 Security Kestrel Opera Presto 2.1.1 Futhark
Opera 9.62 2008-10-30 Security Kestrel Opera Presto 2.1.1 Futhark
Opera 9.61 2008-10-21 Security Kestrel Opera Presto 2.1.1 Futhark
Opera 9.60 2008-10-08 Final Kestrel Opera Presto 2.1.1 Futhark
New features:

  • Opera Scroll Marker
  • Feed Preview
  • Follow/Ignore threads and contacts
  • Go To Thread
  • Low Bandwidth Mode
Opera 9.60b 2008-09-10 Beta Kestrel Opera Presto 2.1.1 Futhark
Opera 9.52 2008-08-20 Security Kestrel Opera Presto 2.1 Futhark
Opera 9.51 2008-07-03 Security Kestrel Opera Presto 2.1 Futhark
Opera 9.50 2008-06-12 Final Kestrel Opera Presto 2.1 Futhark

New features:

  • Opera Dragonfly debugger (alpha)
  • Opera Link
  • Opera Quick Find
  • Support for Extended Validation
  • Alternative tab-closing behaviors
  • Address field notification scheme
  • MathML support
  • SVG external references:
    • <use>, <animation>, <image>
  • SVG as CSS:
    • background-image
    • list-style-image
  • SVG Tiny 1.2:
    • Keyboard navigation
    • Editable text
  • SVG as:
    • <img>in HTML
    • url() in CSS
Opera 9.50b2 2008-04-24 Beta Kestrel Opera Presto 2.1 Futhark
Opera 9.50b1 2007-10-25 Beta Kestrel Opera Presto 2.1 Futhark
Opera 9.27 2008-04-03 Security Merlin Opera Presto 2.0 Linear B
Opera 9.26 2008-02-20 Security Merlin Opera Presto 2.0 Linear B
Opera 9.25 2007-12-19 Security Merlin Opera Presto 2.0 Linear B
Opera 9.24 2007-10-17 Security Merlin Opera Presto 2.0 Linear B
Opera 9.23 2007-08-15 Security Merlin Opera Presto 2.0 Linear B
Opera 9.22 2007-07-19 Security Merlin Opera Presto 2.0 Linear B
Opera 9.21 2007-05-21 Security Merlin Opera Presto 2.0 Linear B
Opera 9.20 2007-04-11 Final Merlin Opera Presto 2.0 Linear B
New features:

  • Speed Dial
  • Developer Tools
Opera 9.20b 2007-03-28 Beta Merlin Opera Presto 2.0 Linear B
Opera 9.10 2006-12-18 Final Merlin Opera Presto 2.0 Linear B
New features:

  • Fraud Protection
Opera 9.02 2006-09-21 Security Merlin Opera Presto 2.0 Linear B
Opera 9.01 2006-08-02 Security Merlin Opera Presto 2.0 Linear B
Opera 9.00 2006-06-20 Final Merlin Opera Presto 2.0 Linear B
New features:

  • Canvas (<canvas>) support
  • Web Forms 2
  • Acid2 Test: passed
  • Content blocking
  • BitTorrent support
  • Widgets
  • Search engine editor
  • Rich text editing
  • XML 1.1 support
  • XSLT and XPath support
  • Site preferences
  • New installer: one package, 30 languages
  • Source viewer: Opera original, fully integrated
  • NTLM support (Windows only)
  • opera:config for advanced settings configuration
Opera 9.00b2 2006-05-23 Beta Merlin Opera Presto 2.0 Linear B
Opera 9.00b1 2006-04-20 Beta Merlin Opera Presto 2.0 Linear B
Opera 9.00tp 2005-10-20 Tech Preview Merlin Opera Presto 2.0 Linear B

Opera 8 series

Historical note
Project names were first assigned and made public starting with the Opera 9 series (Merlin). Previous to Opera 9.00 TP, projects were classified with internal branch numbers and not publicized. The Project name data cells in the following Opera version tables are identified as Internal.
Historical note
Opera 8.50 “Bolton” version: The Opera 8.50 “Bolton” version permanently removed the ad banner and licensing fee from the browser. Opera was previously available free of charge with an ad banner. Users had the option of paying a license fee to remove the ad banner and receive premium support.
Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 8.54 2006-04-05 Security Internal Opera Presto 1.0 Linear B
Opera 8.53 2006-03-02 Security Internal Opera Presto 1.0 Linear B
Opera 8.52 2006-02-17 Security Internal Opera Presto 1.0 Linear B
Opera 8.51 2005-11-22 Security Internal Opera Presto 1.0 Linear B
Opera 8.50
(“Bolton”)		 2005-09-20 Final Internal Opera Presto 1.0 Linear B
New features:

  • 1st completely free download version (ad-free toolbar)
  • Browser JavaScript: “on” by default with installation
Opera 8.02 2005-07-28 Security Internal Opera Presto 1.0 Linear B
Opera 8.01 2005-06-16 Security Internal Opera Presto 1.0 Linear B
Feature: Browser JavaScript introduced with user on/off option
Opera 8.00 2005-04-19 Final Internal Opera Presto 1.0 Linear B
New features:

  • SVG support for:
    • Declarative SVG animation (SVG 1.1 Tiny)
  • Full Voice capability & navigation
  • User JavaScript
  • Fit to Window Width
  • XMLHttpRequestsupport
  • Notification of blocked pop-ups
  • Automated weekly update check
  • Atom news feeder support
Opera 8.00b3 2005-03-16 Beta Internal Opera Presto 1.0 Linear B
Opera 8.00b2 2005-02-25 Beta Internal Opera Presto 1.0 Linear B
Opera 8.00b1 2004-12-23 Beta Internal Opera Presto 1.0 Linear B

Opera 7 series

Historical note
Opera 7.01 “Bork” version: Microsoft’s MSN portal targeted Opera users by purposely providing them with a broken page. As a reply to MSN’s treatment of its users, Opera Software released a very special Bork version of its Opera 7 for Windows browser. The Bork version behaves differently on one Web site: MSN. Users accessing the MSN site will see the page transformed into the language of the famous Swedish Chef from the Muppet Show: Bork, Bork, Bork! Further information regarding the Opera 7.01 “Bork” version is available from our press release.
Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 7.60tp4 2004-12-03 Tech Preview Internal Opera Presto 1.0 Linear B
Opera 7.60tp3 2004-11-12 Tech Preview Internal Opera Presto 1.0 Linear B
Opera 7.60tp2 2004-10-26 Tech Preview Internal Opera Presto 1.0 Linear B
Opera 7.60tp1 2004-08-24 Tech Preview Internal Opera Presto 1.0 Linear B
Opera 7.55 2005-01-09 Special Internal Opera Presto 1.0 Linear B
New features:

  • 2nd release as part of IBM Websphere Multimodal extension toolkit
  • Improved Voice capability
Opera 7.54ud2 2005-02-04 Security Internal Opera Presto 1.0 Linear B
Opera 7.54ud1 2004-12-10 Security Internal Opera Presto 1.0 Linear B
Opera 7.54 2004-08-05 Security Internal Opera Presto 1.0 Linear B
Opera 7.53 2004-07-20 Security Internal Opera Presto 1.0 Linear B
Opera 7.52 2004-07-07 Security Internal Opera Presto 1.0 Linear B
Opera 7.51 2004-06-03 Security Internal Opera Presto 1.0 Linear B
Opera 7.50 2004-05-12 Final Internal Opera Presto 1.0 Linear B
New features:

  • Improved Quick internal cross-platform GUI toolkit
  • Integrated IRC (Internet Relay Chat) client
  • RSS newsfeeds
  • Full-text indexing of e-mail messages
Opera 7.50b1 2004-04-22 Beta Internal Opera Presto 1.0 Linear B
Opera 7.30 2004-03-23 Special Internal Opera Presto 1.0 Linear B
New features:

  • 1st release as part of IBM Websphere Multimodal extension toolkit
  • Initial Voice capability added
Opera 7.23 2003-11-22 Security Internal Opera Presto 1.0 Linear B
Opera 7.22 2003-11-12 Security Internal Opera Presto 1.0 Linear B
Opera 7.21 2003-10-14 Security Internal Opera Presto 1.0 Linear B
Opera 7.20 2003-09-23 Final Internal Opera Presto 1.0 Linear B
New features:

  • Notes
  • DOM CSS
  • DOM HTML
  • Aspect ratio (CSS3 media queries)
  • BiDi language display
  • Horizontal panning
  • Default accept header is application/xmlinstead of application/xhtml+xml
  • Synchronized animations
  • JavaScript options in Multimedia preferences
Opera 7.20b 2003-08-28 Beta Internal Opera Presto 1.0 Linear B
Opera 7.11 2003-05-09 Security Internal Opera Presto 1.0 Linear B
Opera 7.10 2003-04-11 Final Internal Opera Presto 1.0 Linear B
New features:

  • Notes
  • Cookie manager
  • Wand manager
  • Rewind
  • Support for multiple users on Windows
Opera 7.03 2003-03-13 Security Internal Opera Presto 1.0 Linear B
Opera 7.02 2003-02-26 Security Internal Opera Presto 1.0 Linear B
Opera 7.01
“Bork”		 2003-02-14 Special Internal Opera Presto 1.0 Linear B
Opera 7.01 2003-02-05 Security Internal Opera Presto 1.0 Linear B
Opera 7.00 2003-01-28 Final Internal Opera Presto 1.0 Linear B
New features:

  • Opera Presto rendering engine
  • Linear B JavaScript engine
  • Quick: cross-platform GUI toolkit
  • Drag-and-Drop of Tabs
  • Fast Forward
  • Spatial navigation
  • M2 e-mail and news client
  • Page/document reflow support
  • DOM Level 2 support
  • Complete WML 1.3 and 2.0 support
  • Complete ECMAScript support
  • Panels (formerly Hotlist panels)
Opera 7.00b2 2002-12-18 Beta Internal Opera Presto 1.0 Linear B
Opera 7.00b1v2 2002-11-22 Beta Internal Opera Presto 1.0 Linear B
Opera 7.00b1 2002-11-13 Beta Internal Opera Presto 1.0 Linear B

Opera 6 series

Historical note
“Elektra” was originally used as a codename for the 4.0 release, but was later used to refer to the rendering capabilities (the “engine”) from version 3.5 through version 6. The Opera 7 series and those that followed began the formal labeling of the rendering engine, in this case “Opera Presto”.
Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 6.10 2002-10-31 FreeBSD version Internal Elektra Linear A
New features:

  • 1st FreeBSD version
Opera 6.06 2002-03-18 Security Internal Elektra Linear A
Opera 6.05 2002-08-13 Security Internal Elektra Linear A
Opera 6.04 2002-06-01 Security Internal Elektra Linear A
Opera 6.03 2002-05-27 Security Internal Elektra Linear A
Opera 6.02 2002-05-15 Security Internal Elektra Linear A
Opera 6.01 2002-02-12 Security Internal Elektra Linear A
Opera 6.00 2001-12-18 Final Internal Elektra Linear A
New features:

  • Skin choices enabled
  • Start-up dialog
  • SDI/MDI mode
  • Unicode character standard
  • Hotclick
  • Hotlist panels
  • Personal bar
  • PNG alpha transparency
  • Internationalized domain names
  • Small-screen rendering
  • Further improved pop-up blocking control
Opera 6.00b 2001-11-13 Beta Internal Elektra Linear A

Opera 5 series

Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 5.12 2001-06-27 Security Internal Elektra Linear A
Opera 5.11 2001-05-05 Security Internal Elektra Linear A
Opera 5.10 2001-04-10 Final Internal Elektra Linear A
New features:

  • Mouse gestures
  • Integrated search
  • In-line progress indicator
  • Mouse button reversing
  • Image choices enabled for toolbar background
  • XHTML namespace support
  • <noscript> HTML compliance
  • Deprecated S-element support
  • CSS system colors support
  • Improved pop-up blocking
Opera 5.02 2001-01-16 Security Internal Elektra Linear A
Opera 5.01 2000-12-18 Security Internal Elektra Linear A
Opera 5.00 2000-12-06 Final Internal Elektra Linear A
New features:

  • 1st free download version (ad sponsored)
  • Search field on toolbar
  • Integrated ICQ chat client (removed in later versions)

Opera 4 series

Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 4.02 2000-08-04 Security Internal Elektra Linear A
Opera 4.01 2000-07-14 Security Internal Elektra Linear A
Opera 4.00 2000-06-28 Final Internal Elektra Linear A
New features:

  • Tabbed browsing: TDI (Tabbed Document Interface)
  • Opera Show (support for @mediarules)
  • Linear A JavaScript engine
  • Print preview
  • Kiosk mode
  • XML 1.0 support
  • Dynamic HTML (DHTML) support
  • Clear private data
  • E-mail and news client
  • 128 bit encryption
  • SSL 2 and 3, CSS1, CSS2, XML, HTML 4.0, HTTP 1.1, ECMAScript and JavaScript 1.3 support
  • Supports @mediarules
  • Experimental support for WML (surf WAP sites directly from the desktop)
  • Sun Java Plug-in 1.3 support
Opera 4.00b6 2000-06-27 Beta Internal Elektra Linear A
Opera 4.00b5 2000-06-07 Beta Internal Elektra Linear A
Opera 4.00b4 2000-05-17 Beta Internal Elektra Linear A
Opera 4.00b3 2000-04-21 Beta Internal Elektra Linear A
Opera 4.00b2 2000-04-03 Beta Internal Elektra Linear A
Opera 4.00tp 2000-03-20 Tech Preview Internal Elektra Linear A

Opera 3 series

Historical note:
Opera introduced a beta version release for BeOS on July 29, 1999. It was built for the BeOS operating system which had the ability to run in a multiple CPU environment.
Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 3.65 BeOS beta 1999-07-29 Beta
(first BeOS version)		 Internal Elektra Unnamed
Opera 3.62 2000-03-10 Security Internal Elektra Unnamed
Opera 3.62b 2000-01-25 Beta Internal Elektra Unnamed
Opera 3.61 1999-12-21 Security Internal Elektra Unnamed
Opera 3.60 1999-05-06 Final Internal Elektra Unnamed
New features:

  • New optional user interface button sets (2)
  • Improved CSS, HTML, JavaScript, and faster JPEG and GIF image rendering
Opera 3.51 1998-12-22 Security Internal Elektra Unnamed
Opera 3.50 1998-11-18 Final Internal Elektra Unnamed
New features:

  • Elektra rendering engine
  • File Upload
  • Integrated download/transfer manager
  • CSS 1 support
  • TLS 1.0 support
  • UserCSS
  • Java functionality through plug-ins
  • Offline mode
Opera 3.21 1998-04-01 Security Internal Unnamed Unnamed
Opera 3.10 1998-02-01 Security Internal Unnamed Unnamed
Opera 3.00 1997-12-01 Final Internal Unnamed Unnamed
New features:

  • JavaScript
  • HTML 2.0 full compliance
  • HTML 3.3 partial compliance
  • SSL
  • Plug-in capabilites
  • Nicknames (aliases for search pages/bookmarks)
  • Pop-up blocking
  • Button set choices made available
  • Ctrl+Shift clicking on links
Opera 3.00b 1997-09-15 Beta Internal Unnamed Unnamed

Opera 2 series

Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 2.12 1997-02-12 Final Internal Unnamed None
New features:

  • Block referrer information
  • Adjust actions on specific MIME types
  • Empty cache on exit
  • Disable images, animation, or frames
  • Launch sounds at:
    • startup
    • on page load
    • on exit
  • Multiple graphics formats support:
    • .JPG
    • .GIF
    • .XBM
    • .BMP
    • .AVI video
    • Animated .GIF
    • MPEG video
Opera 2.10 1996-12-09 Final Internal Unnamed None
1st public release
New features:

  • Zoom: proportional full page scaling from 20% to 1000%
  • Sessions: save, open, insert and restore sessions
  • Frames capabilites
  • New keyboard shortcuts
  • Loads local and external web pages
  • Support for HTML 3.0
Opera 2.10b3 1996-11 Beta Internal Unnamed None
Opera 2.10b2 1996-10 Beta Internal Unnamed None
Opera 2.10b1 1996-09 Beta Internal Unnamed None
Opera 2.00 1996-04-22 Final Internal Unnamed None
Publically announced by Jon von Tetzschner
New features:

  • NNTP client
  • SMTP client
Opera 2.00cd 1996-04-18 Demo CD Internal Unnamed None

Opera 1 series

Version
number		 Release
date		 Release
type		 Project
name		 Rendering
engine		 JavaScript
engine
Opera 1.00 1995-04-10 through 1995-04-14

  • Demonstrated publicly at WWW 1995 conference
  • First Beta: late 1994
  • Work started: April 1994
 Limited/internal Internal Unnamed None
New features:

  • MDI Interface
  • Keyboard interface
  • Sessions
  • RAM Cache
  • Image control per window (on/off/loaded)
  • Multiple setups (simple, advanced, etc.)
  • Multiple home pages: set a home page per window (removed in later versions)
  • Multi-item Hot List: allows reading of multiple documents simultaneously