The software can be dowloaded here mGSV v2.1.
Latest updates are in GitHub Repository
Revanna, K., Munro, D., Gao, A., Chiu, C, Pathak, A. and Dong, Q. (2012) A Web-based multi-Genome Synteny Viewer for Customized Data. BMC Bioinformatics 13:190. DOI: 10.1186/1471-2105-13-190.
It is ranked as a "Highly accessed" paper by BioMed Central.