Quantum GIS Downloads
Quantum GIS (QGIS) is a user friendly Open Source Geographic Information System (GIS) that runs on Linux, Unix, Mac OSX, and Windows.

Be sure to download and read the User Guide (PDF or HTML).
VersionPlatformPackageComment
0.10.0Debian Testing ('Lenny')deb http://debian.gfoss.it/ lenny mainAdd the package url to your sources.list, then apt-get update; apt-get install qgis
0.10.0Mac OS Xhttp://download.osgeo.org/qgis/mac/qgis-0.10.0.dmg.gzAll in one bundle including all dependencies.
0.10.0Mac OS Xhttp://www.kyngchaos.com/wiki/software:qgisRequires additional Kyng Chaos frameworks--read the requirements carefully
0.10.0Mandriva Linux 2008http://rpmlinux.org/qgisRPM for Mandriva 2008.1 i586 of QGIS 0.10.0
0.10.0Source (all platforms)http://download.osgeo.org/qgis/src/qgis_0.10.0.tar.gzSee INSTALL.txt for build instructions
0.10.0SuSE 10.2 and 10.3http://download.opensuse.org/repositories/Application:/Geo/(Suse 10.2 version has no python support)
0.10.0Ubuntu Gutsydeb http://ppa.launchpad.net/qgis/ubuntu gutsy mainAdd the download url line to /etc/apt/sources.list. Run from command line: sudo apt-get update && sudo apt-get install qgis
0.10.0Ubuntu Hardydeb http://ppa.launchpad.net/qgis/ubuntu hardy mainAdd the download url line to /etc/apt/sources.list. Run from command line: sudo apt-get update && sudo apt-get install qgis
0.10.0Windowshttp://download.osgeo.org/qgis/win32/QGIS-0.10.0-Setup.exeWindows MSYS based package with Python and GRASS support prepared by Marco Pasetti.
0.9.1Debian Lennydeb http://debian.gfoss.it/ lenny mainAdd the package url to your sources.list, then apt-get update; apt-get install qgis
0.9.1Mac OS Xhttp://www.kyngchaos.com/software/unixport/qgisRequires additional Kyng Chaos frameworks--read the requirements carefully
0.9.1Mac OS Xhttp://download.osgeo.org/qgis/mac/qgis-0.9.1.dmg.gzAll in one bundle including all dependencies
0.9.1Sourcehttp://download.osgeo.org/qgis/src/qgis_0.9.1.tar.gzSee INSTALL.txt and build instructions at http://wiki.qgis.org/qgiswiki/Building_with_CMake
0.9.1Ubuntu Gutsydeb http://ppa.launchpad.net/timlinux/ubuntu gutsy mainAdd the package_url to your sources.list then apt-get update
0.9.1Windowshttp://download.osgeo.org/qgis/win32/qgis_setup0.9.1.18_12_2007.exeWindows installer with Python and GRASS support
0.9.2rc1Debian 'Lenny'deb http://debian.gfoss.it/ lenny mainapt-gettable repository (i386 only)
0.9.2rc1Mac OS Xhttp://www.kyngchaos.com/wiki/software:qgisRequires additional Kyng Chaos frameworks--read the requirements carefully
0.9.2rc1Mac OS Xhttp://download.osgeo.org/qgis/mac/qgis-0.9.2rc1.dmg.gzThis is a 0.9.2 release candidate build. It is a preview and should be used for testing purposes only. All in one bundle including all dependencies
0.9.2rc1Ubuntu Gutsydeb http://ppa.launchpad.net/timlinux/ubuntu gutsy mainAdd the package_url to your sources.list then apt-get update
0.9.2rc1Windowshttp://download.osgeo.org/qgis/win32/qgis_setup0.9.2rc1_05_02_2008.exeThis is a 0.9.2 release candidate build with Python and GRASS support. It is a preview and should be used for testing purposes only.
You can browse the available downloads by directory at download.osgeo.org

Support

Discussion about the preview releases takes place on the qgis-developer mailing list and the #qgis IRC channel on freenode.net.