Opera Software has launched Opera 5 for Mac OS X Carbon Technology Preview 1.

This is the second Mac OS X release of Opera Software’s latest browser. Unlike Opera 5 for Macintosh Beta 1 - which only ran in Classic mode - this latest preview runs natively in Mac OS X.

Håkon Wium Lie, Opera Software’s chief technology officer, said: "We are asking all Mac OS X users to send us bug reports on this technology preview, and make sure that - as with our other releases - this evolves into the fastest, smallest and most secure browser they have ever used."

Bug bear
The company warns that though the preview will not harm Macs, users should expect frequent crashes and bugs.

Features supported by the preview include fast page-rendering, keyboard shortcuts and instantaneous toggling of image and document settings. It is also possible to browse several windows simultaneously without draining the system. Downloads can be resumed if interrupted.

Opera 5 for Mac OS X Carbon Technology Preview 1 supports World Wide Web Consortium (W3C) standards: 128-bit encryption, TLS (transport layer security) 1.0, SSL (secure sockets layer) 2 and 3, CSS1 (cascading style sheets) and CSS2, XML (extensible mark-up language), HTML (hyper text mark-up language) 4.01, HTTP (hyper text transfer protocol) 1.1, DOM (document object model) and WAP/WML (wireless application protocol/wireless mark-up language).

The company claims that Opera is the fastest full-featured browser on the market. Opera 5 for Mac OS X Carbon Technology Preview 1 is a free 2MB download.