Southern Light Rail (SLR) is a Georgia Tech non-profit corporation providing National Lambda Rail (NLR) access to the Georgia Research Alliance universities, other universities in the Southern region of the United States and governmental and private sector organizations involved in university research initiatives. SLR will reach out to facilitate dark fiber connectivity to the Southern universities and research centers. This will help enable more collaborative research activities between and within universities.

SLR is working in partnership with Southern Crossroads (SoX) to provide services to the research community. SLR also manages and operates the Georgia Collaborative Research Initiative and Georgia Tech's International Connections.