> I seem to remember that Opera was the first stand-alone browser that brought the world tabbed browsing. Nope. There were other browser before that. And Opera

> I seem to remember that Opera was the first stand-alone browser that brought the world tabbed browsing. Nope. There were other browser before that. And Opera did not have Tabs back then. They had MDI with a button-bar for document-access. Mozilla was the first one delivering a real tabbed interface, and was later copied by opera and others. At the end there was a bunch of features coming from several browsers (but mostly mozilla and opera), which improved each other in tight competition; so it's a bit complicated to say what originated from whom.