1. AllegroGraph：
AllegroGraph是高性能的持久性RDF存储，并具有对Graph DBMS的附加支持。它用作文档存储，旨在以JSON-LD格式存储，检索和管理面向文档的信息。 AllegroGraph的第一个版本于2004年发布。
2. Amazon DocumentDB：
Amazon DocumentDB是商业许可的数据库，具有以下功能，因为它是支持MongoDB工作负载的快速，可扩展，高可用性和完全托管的文档数据库服务。目前在AWS的加利福尼亚州，俄勒冈州，北弗吉尼亚州和爱尔兰地区可用。它通过模拟响应来实现Apache 2.0开源MongoDB 3.6 API。 AllegroGraph和Amazon DocumentDB之间的区别：
| S.NO. | AllegroGraph | Amazon DocumentDB |
|---|---|---|
| 1. | It was developed by Franz Inc. in 2004. | It was developed by Amazon in 2019. |
| 2. | It is high performance, persistent RDF store with additional support for Graph DBMS. | It is fast, scalable, highly available, and fully managed MongoDB-compatible database service. |
| 3. | The license of AllegroGraph is commercial. | The license of Amazon DocumentDB is also commercial. |
| 4. | Server operating systems for AllegroGraph are Linux, OS X and Windows. | In Amazon DocumentDB there are hosted server operating systems. |
| 5. | It primary database models are Document Store, Graph DBMS and RDF store. | It primary database model is Document Store. |
| 6. | It supports the Server-side scripting with JavaScript or Common Lisp. | It does not support the Server-side scripting. |
| 7. | The partitioning can be done with Federation. | It does not support the partitioning methods. |
| 8. | It uses SPARQL as query language. | It does not support SQL query language. |
| 9. | It supports two replication methods : Master-Slave Replication and Multi-Master Replication. | It supports multi-availability zones for high availability. |
| 10. | It does not provide the concept of Referential Integrity. Hence, no Foreign Keys. | It also does not provide the concept of Referential Integrity. Hence, no Foreign Keys. |
| 11. | It offers an API for user-defined Map/Reduce methods. | It does not offer any API for user-defined Map/Reduce methods. |
| 12. | It is not available as a cloud service. | It is available as a cloud service. |