Opera Software has unveiled its speed-enhanced Opera 6 for Mac Beta 2, offering shared library support.

This release offers Mac developers the use of Opera's rendering engine in their products.

Opera 6 Beta 2 for Mac OS 8.6 to 10.2 has undergone speed-enhancements as well as a series of other fixes to the cookie manager, quick preferences, keychain in forms, and link bar.

Opera CEO Jon von Tetzchner said: "We’ve been working hard to make sure that this version lives up to Opera's reputation as the best Internet experience and we are hoping to see extensive feedback from all our Mac users out there to let us know how we can improve it even further."

Opera 6.0 for Mac is the first Opera desktop browser that has the Opera core as a shared library.

Inclusion of shared library support offers Mac application developers the ability to make use of Opera's superior rendering engine in their products.

The shared library was co-developed with Macromedia, and is the result of an agreement to embed the Opera browser in Macromedia's Web authoring products from July 2 this year.

In future, Web developers using Macromedia's tools on the Mac will be able to preview pages they have created using Opera's rendering engine.

The developer promises further improvements in the final Opera 6 for Mac version.