Neo4j by Roberto Zicari · January 1, 2010 Neo4j: a high performance open-source embeddable or standalone graph database. Good integration via Java, Grails, PHP, .NET, REST, Rubyetc. High Availability and Online-backup available. LINK
BloodHound: an application which uses graph theory to reveal the hidden and often unintended relationships within an Active Directory environment. 6 Aug, 2017