AllegroGraph vs NebulaGraph
AllegroGraph
allegrograph.com
NebulaGraph
nebula-graph.ioSide by side
| Figure | AllegroGraph | NebulaGraph |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 4 | 4 |
| Spec score · Graph Databases | 9.0 (#3) | 8.5 (#7) |
| Company headquarters | Franz Inc. is headquartered in Lafayette, California. | Vesoft says it is headquartered in Cupertino, California. |
| Company legal name | Crunchbase identifies the legal name as Franz Inc. | Crunchbase lists the legal name as Vesoft Inc and Nebula Graph as an alternate name. |
| Company size | LinkedIn lists Franz Inc. in the 11–50 employee size range. | Crunchbase lists Vesoft in the 101–250 employee range. |
| Deployment | The server runs natively on 64-bit Linux; Windows and macOS users can use hosted service, Docker, WSL or a Linux virtual machine. | The maker supports on-premises, public-cloud and hybrid deployment models. |
| Documentation depth | The documentation index covers administration, query languages, reasoning, security, replication, ETL/data integration and examples. | The documentation covers architecture, deployment, nGQL, clients, ecosystem tools, operations, FAQs and release notes, and the 3.8.0 manual was revised September 24, 2026. |
| Founded | 1984 | 2018 |
| Graph scale | The platform is designed to scale to billions of triples, quads and documents using disk storage and memory management. | NebulaGraph states that it can store and process graphs with trillions of edges and vertices. |
| Headquarters | Lafayette, California, USA | Cupertino, California, United States |
| Integrations | Documented integrations include MongoDB, Solr, Kubernetes, Docker, AWS and Azure marketplaces, plus Prometheus/Grafana monitoring. | Official ecosystem tools include Java, Python, C++, and Go clients plus Spark and Flink connectors. |
| Rating on G2 | 5 out of 5 from 3 eligible reviews; G2 says there are too few reviews for buying insight. | 5.0 out of 5 from 2 reviews |
| Security | The editions comparison lists triple-level security, encryption in transit and at rest, encrypted backups, role-based access control, IP allowlists, and audit logs. | NebulaGraph Cloud provides Private Link for private network access and role-based access control for graph-space permissions. |
| Security controls | Security features include triple-level security, role-based access control, IP allowlists and audit logging. | The edition comparison lists transmission encryption, user and role management, graph-space permissions, node-edge permissions, attribute permissions and audit logs. |
| Self-hosting | Downloads include RPM and tar archives, Docker images and Kubernetes multi-master replication examples. | Users can build from source, deploy binaries on one or multiple machines, or run the database through cloud offerings. |
| Support | Franz states that it provides ongoing technical support and product maintenance for AllegroGraph customers. | NebulaGraph Cloud lets customers create work orders from the dashboard for assistance from a technical support specialist. |
Plans
AllegroGraph
- FreeFree
- Free EditionFree
- EnterprisePriced on request
- Enterprise EditionPriced on request
NebulaGraph
- Open-source EditionFree
- NebulaGraph Cloud StandardPriced on request
- NebulaGraph Cloud ProfessionalPriced on request
- Enterprise EditionPriced on request
In their own words
AllegroGraph
AllegroGraph is a semantic graph database for building knowledge graphs and integrating complex data. It combines graph data with vector storage, symbolic reasoning and large language model integration. GraphTalker accepts natural-language questions about knowledge graphs and returns verified answers through an iterative, agent-driven process. Supported technologies include RDF, OWL, SPARQL, SHACL and Prolog rules, alongside reasoning. FedShard provides horizontal sharding and federation, combining query results from multiple machines. Analytics include geospatial, temporal and social-network analysis. Listed integrations include Solr, MongoDB and REST-based clients for Java, Python, RDF4J, Apache Jena and Lisp. The Free edition costs nothing and is limited to up to 5 million triples. Enterprise has no listed price and specifies unlimited triples with no server limit. AllegroGraph is available as a download or through cloud hosting, including AWS Marketplace and Azure Marketplace. The server runs natively on Linux x86-64; Windows or macOS use is recommended through a Linux virtual machine or Docker container.
NebulaGraph
NebulaGraph is a distributed graph database for storing and querying complex connected data. It is designed for scalability and millisecond responses to complex queries; the project says it can store and process graphs with trillions of edges and vertices. It supports nGQL and openCypher compatibility, while native ISO-GQL is supported in Enterprise v5.0. Native vector search combines graph structures with unstructured data. Deployment options include on-premises, public cloud, and hybrid environments, and NebulaGraph Cloud can deploy clusters on Azure, AWS, and Google Cloud Platform. Developers can use Java, Python, C++, and Go clients, plus Spark and Flink connectors. NebulaGraph Studio is a web-based tool for schema creation, data import, query writing, and graph exploration. Cloud features include Private Link, role-based graph-space permissions, Raft-based redundant backups across server rooms in the same city, and point-in-time snapshots. The open-source edition is free under Apache 2.0; a 14-day Cloud trial includes one instance with 2 vCPUs, 4 GB RAM, and 10 GB storage without payment information.