The following download options are available for Lorien:
Formal release 2.8.4
This is the latest official release of Lorien.
All tests complete successfully and it is synchronised with the current documentation.
You'll need to have the appropriate cross-compilers (e.g. msp430-gcc) pre-installed.
VMware development environment
This is a VMware virtual machine image containing all toolchain and compiler elements.
It also contains an SVN checkout of Lorien. If you're new to WSN development this is the recommended way to get started.
You'll also need the (free) [VMware Player] application allowing you to run this Ubuntu-based virtual machine on any operating system.
This is a gzipped tar of the current SVN, generated when you click on the download link.
It is not guaranteed to be fully working or match current documentation.
Finally, you can check out the SVN directly with the command
svn co https://lorienos.svn.sourceforge.net/svnroot/lorienos lorienos
Again, an SVN checkout is not guaranteed to be fully working or match current documentation.