ArangoDB is a free, open-source, and native graph database system developed by ArangoDB Inc. It is a multi-model database system that natively supports graphs, documents, and searches. Compared to other NoSQL databases, ArangoDB stores data as documents, key/value pairs, or graphs. It uses a declarative query language called AQL (ArangoDB Query Language). ArangoDB provides both a command line interface and a web-based interface.