Download Qt 4.8

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Nokia has released a new version of Qt. Qt, pronounced cute, is an open source and cross-platform environment for developing applications. It is used in Google Earth, KDE, Opera, Skype, VLC Media Player and VirtualBox, among others. More information about this release is here Here are the main improvements made in version 4.8:

Qt Platform Abstraction (QPA)

QPA restructures the GUI stack to enable easier porting of Qt to different windowing systems and devices. More info on: Lighthouse has grown up now.

Threaded OpenGL support

Enables those of us that are not OpenGL-ninjas to render OpenGL from more than one thread concurrently. More info on: Threaded OpenGL in 4.8.

Multithreaded HTTP

HTTP requests are now handled in a separate thread by default. This should make application guis smoother, as networking will no longer use the main event loop.

Optimized file system access

The file system stack received some heavy lifting under the hood. The result is better I/O performance, achieved by reducing the number of system calls performed for I/O and by better use of cached data, when available. The improvements in performance can be seen across all platforms.

Qt screenshot, click on the image for a larger version.

Version number 4.8
Release status Final
Operating systems Windows 7, Windows 2000, Linux, Windows XP, macOS, Windows Server 2003, Linux AMD64, Windows Vista, Windows Server 2008
Website Nokia
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License type GPL
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