Opera developer browser
Updated a few times per week, Opera developer gives you a sneak peek of upcoming features and experiments that might make their way into future products.
Developer tools and resources
Dev.Opera
Dev.Opera covers current and future HTML, CSS and JavaScript features and implementations, responsive web design, browser extensions, and more.
Extensions
Got an idea for adding something fun and useful to Opera? Our documentation gives a step-by-step explanation of how to build your own extension.
Opera Mini simulator
Get a taste of what your site looks like on non-smartphones by using the Opera Mini simulator on your computer.
Opera TV Emulator
The Opera TV Emulator allows web developers to build and test HTML5-based applications easily for the Opera TV Store and more.
Events
Catch us at a developer event nearby, and come out and say hello! Sometimes we even sing songs!
Web development extensions
Looking for a tool to monitor HTTP headers, switch user-agent strings or edit cookies? Our extensions catalog has you covered.