A prototype can be found at http://autog.comp.hkbu.edu.hk:8000/autog/.
The current prototype runs on a commodity machine and serves one request at a time.
We have prepared a virtual machine for interested users to try AutoG on their machines.
P. Yi, B. Choi, S. S. Bhowmick, and J. Xu. AutoG: A Visual Query Autocompletion Framework for Graph Databases. PVLDB 2016. PDF
P. Yi, B. Choi, S. S. Bhowmick, and J. Xu. AutoG: A Visual Query Autocompletion Framework for Graph Databases. VLDBJ 2017. PDF