Feeds

Opera moves Dragonfly to Apache for patent promise

Browser closed. Debug open

Securing Web Applications Made Simple and Scalable

Web 2.0 Expo Opera has switched its Dragonfly open source debug tool to an Apache 2.0 license to include a promise that users are protected from patents owned by Opera or any other contributor to the project.

Dragonfly - similar to Mozilla's Firebug tool - completed its open sourcing in February, when it was moved from Opera servers to BitBucket. It was originally under the BSD license.

The tool only runs in the Opera browser, and it speaks to the browser via Opera's Scope protocol, which also receives patent protection under the Apache 2.0 license.

With the tool, you can debug JavaScript, CSS, DOM, and HTML code. It's included in Opera 9.5 and later, and it can remotely connect to non-PC devices running version 2.1 of Opera's Presto rendering engine or later. For instance, you can use your desktop browser to debug a site running on Opera Mobile 9.5 on Windows Mobile.

According to Opera, Dragonfly is now used by 100,000 developers, and its use has grown "rapidly" since the introduction of Opera 10.50, based on the new Carakan rendering engine.

Dragonfly is Opera's first open source project, and the company still has no intention of opening sourcing the browser itself. On Wednesday, at the Web 2.0 Expo in San Francisco, Opera chief standards officer Charles McCathieNevile told The Reg that open sourcing the browser would mean transforming Opera from a company of engineering to a company of managers, and that's not something it wants to do. He acknowledged that open sourcing the browser would win the company some good will, but said it wouldn't make sense financially.

Opera does use the open source GStreamer multimedia framework for video, and per GStreamer's LGPL license, the company has open sourced its modified source code. You can find it here. ®

Bridging the IT gap between rising business demands and ageing tools

More from The Register

next story
NO MORE ALL CAPS and other pleasures of Visual Studio 14
Unpicking a packed preview that breaks down ASP.NET
Cheer up, Nokia fans. It can start making mobes again in 18 months
The real winner of the Nokia sale is *drumroll* ... Nokia
Mozilla fixes CRITICAL security holes in Firefox, urges v31 upgrade
Misc memory hazards 'could be exploited' - and guess what, one's a Javascript vuln
Put down that Oracle database patch: It could cost $23,000 per CPU
On-by-default INMEMORY tech a boon for developers ... as long as they can afford it
Google shows off new Chrome OS look
Athena springs full-grown from Chromium project's head
Apple: We'll unleash OS X Yosemite beta on the MASSES on 24 July
Starting today, regular fanbois will be guinea pigs, it tells Reg
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.