You can download the latest binaries here, or access the current development version using Git.

Avogadro 2 release:

Avogadro2 Platform Files
Windows (Win64 Installer) Avogadro2-1.90.0-win64.exe
Mac OS X Avogadro2-1.90.0-Darwin.dmg
Libraries (Source) avogadrolibs-1.90.0.tar.gz
Application (Source) avogadroapp-1.90.0.tar.gz

MoleQueue release:

MoleQueue Platform Files
Windows (Win32 Installer) MoleQueue-0.7.1-win32.exe
Mac OS X MoleQueue-0.7.1-Darwin.dmg
Source molequeue-0.7.1.tar.gz

MongoChem release:

MongoChem Platform Files
Windows (Win32 Installer) MongoChem-0.5.0-win32.exe
Mac OS X MongoChem-0.5.0-Darwin.dmg
Source mongochem-0.5.0.tar.gz

This software may not be exported in violation of any U.S. export laws or regulations.  For more information regarding Export Control matters please go to http://kitware.com/export_control/index.html.