Releases are available at http://download.drobilla.net.
To follow bleeding edge development, check out the software with Subversion:
svn co http://svn.drobilla.net/lad/trunk drobillad
Serd and Sord are also available in their own repositories:
svn co http://svn.drobilla.net/serd/trunk serd svn co http://svn.drobilla.net/sord/trunk sord
The entire repository, or individual projects, can be configured/built/installed with the included waf script:
cd drobillad ./waf configure ./waf sudo ./waf install
This site is a Wiki, feel free to contribute. Starting points: