Titan

Titan is a scalable graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine cluster. Titan is a transactional database that can support thousands of concurrent users executing complex graph traversals in real time.

In addition, Titan provides the following features:

• Elastic and linear scalability for a growing data and user base.
• Data distribution and replication for performance and fault tolerance.
• Multi-datacenter high availability and hot backups.
• Support for ACID and eventual consistency.
• Support for various storage backends:
  • Apache Cassandra
  • Apache HBase
  • Oracle BerkeleyDB
• Support for global graph data analytics, reporting, and ETL through integration with big data platforms:
  • Apache Spark
  • Apache Giraph
  • Apache Hadoop
• Support for geo, numeric range, and full-text search via:
  • ElasticSearch
  • Solr
  • Lucene
• Native integration with the TinkerPop graph stack:
  • Gremlin graph query language
  • Gremlin graph server
  • Gremlin applications
• Open source with the liberal Apache 2 license.

Download Titan or clone from GitHub.