The Simulation Factory can be downloaded using git. Note that it is included with the Einstein Toolkit, so if you are using the toolkit, you probably already have it in the directory Cactus/simfactory.
Stable:
git clone -b ET_2021_11 https://bitbucket.org/simfactory/simfactory2.git
Development:
git clone https://bitbucket.org/simfactory/simfactory2.git
Stable:
svn checkout https://svn.cct.lsu.edu/repos/numrel/simfactory/branches/ET_2010_06 simfactory
Development:
svn checkout https://svn.cct.lsu.edu/repos/numrel/simfactory/trunk simfactory