NebulaGraph is a provider of an open source graph database solution that enables the storage of trillions of edges and vertices with properties, achieving millisecond-level latency under high concurrencies. It offers high performance with low latency and high throughput, a SQL-like query language called nGQL, role-based access control for security, and a distributed architecture that allows for linear scalability. The solution supports multiple storage engines and distributed ACID transactions, ensuring data consistency. Additionally, NebulaGraph provides high availability and encourages community participation through its open-source project on GitHub.