Qt/X11 Open Source Edition permits the development of code for Open Source use only. If you would like to do proprietary, commercial development, please proceed to the commercial Qt evaluation page and apply for a supported evaluation.

Qt/X11 Open Source Edition is provided with no support and no warranty.

If you are writing proprietary/commercial software, or if you plan to commercialize the software you are writing with Qt, you must use a commercial version of Qt. Please refer to the Open Source Downloads info page for reasons why.

You can buy commercial Editions of Qt for development of commercial/proprietary software. If you wish to evaluate Qt/X11 for commercial use, please contact sales or go to the Qt Evaluation page.

More questions? See the FAQs.

The current version of Qt/X11 Open Source Edition is 4.4.0. 

If you are interested in previous versions of Qt go here

If you experience problems installing or compiling a Qt Open Source Edition please read the Installation FAQ and Platform Notes.

Tar file

The full Qt/X11 Open Source Edition archive in gzipped tar format. The archive contains the complete source code of the library and extensions with full reference documentation. It compiles on most Unix platforms and some others.

Download

Note: it may take some time for the mirrors' permissions to be updated.

Technical University Chemnitz, Chemnitz, Germany

HTTP:

• http://wftp.tu-chemnitz.de/pub/Qt/qt/source/qt-x11-opensource-src-4.4.0.tar.gz

FTP:

• ftp://ftp.tu-chemnitz.de/pub/Qt/qt/source/qt-x11-opensource-src-4.4.0.tar.gz

National Technical University of Athens, Athens, Greece

HTTP:

• http://ftp.ntua.gr/pub/X11/Qt/qt/source/qt-x11-opensource-src-4.4.0.tar.gz

FTP:

• ftp://ftp.ntua.gr/pub/X11/Qt/qt/source/qt-x11-opensource-src-4.4.0.tar.gz

Fairview Heights, Illinois, USA

HTTP:

• http://ftp.silug.org/mirrors/ftp.trolltech.com/qt/source/qt-x11-opensource-src-4.4.0.tar.gz

 
FTP:

• ftp://ftp.silug.org/mirrors/ftp.trolltech.com/qt/source/qt-x11-opensource-src-4.4.0.tar.gz

Freie Universität Berlin, Berlin (Germany)

FTP:

• ftp://ftp.fu-berlin.de/unix/X11/gui/Qt/source/qt-x11-opensource-src-4.4.0.tar.gz

Download from ftp.trolltech.com:

• qt-x11-opensource-src-4.4.0.tar.gz

Packages

Most Linux and FreeBSD distributors offer adapted binary or source packages in the system's native format (like .rpm or .deb). These are probably easier to install and will fit well into your system.

Please check the download site of your vendor! Some operating system vendors and community sites that ship Qt Open Source Edition packages are:

• Conectiva
• Debian
• FreeBSD
• Mandriva
• Red Hat
• Slackware
• Novell/SuSE
• Blastwave.org (for the OpenSolaris community)

If all else fails you may have a look at our contributed archives.

Md5 Checksums

You can find available Md5 checksums for these files here.

Please note: If you experience problems with the installation of any of these packages, contact the maintainer of the package, not Trolltech as we are not able to help with problems involving external sites.