Nokia has released version 4.5 of its Qt cross-platform application and UI framework to increase productivity and performance.

The company has also introduced Qt Creator, a new lightweight cross-platform integrated development environment, Qt 4.5 and Qt Creator combined comprises the Qt SDK, a package that will let developers create applications.

According to Nokia, Qt 4.5 includes several new features, but sees the improvement via a concerted effort to increase performance across the entire framework. Performance enhancements were made to the graphics system, data handling, and the web engine. Qt 4.5 has also been ported to Apple’s Cocoa framework.

The new Qt SDK is a package designed to provide developers everything they need to begin cross-platform Qt development from a simple-to-install binary package, said Nokia.

Benoit Schillings, chief technologist of Qt software at Nokia, said: Qt 4.5 is setting the benchmark for application development. With the performance improvements in Qt, the introduction of Qt Creator, and the release of the Qt SDK, developers looking for a native or a hybrid native/web application framework now have the power and flexibility they need.