Firebug, a web development plug-in for Firefox, has long been a must-have tool for web developers working with HTML, CSS and JavaScript. But now Opera has released a competing set of developer tools ...

Opera released Opera One 2 in developer beta today, including multimedia features, split tabs, and AI enhancements. Opera One R2 gets a fresh appearance, with new themes and design features. Instead ...

Web developers can now access a beta version of the Opera Dragonfly 1.0 development tools — including a JavaScript debugger, DOM, network and storage inspectors — which are designed to help assess the ...

Opera Software has released Dragonfly, a development and debugging tool integrated into its browsers, the company said on Thursday. The tool is platform agnostic and works with both Opera Mobile for ...