JanusGraph is an open source, distributed, scalable property graph database, supporting many distributed storage backends, such as Apache HBase, Google Cloud Bigtable, Apache Cassandra, and more. JanusGraph supports Elasticsearch, Apache Solr and Apache Lucene for building indexes and integrates with Apache Spark, Apache Giraph and Apache Hadoop for distributed analytics. JanusGraph can be queried using the popular Gremlin graph query language, and is an Apache TinkerPop-compliant graph database implementation.