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 SimpleDB：
它是Amazon托管的简单数据库服务，数据存储在Amazon Cloud中。它是Amazon是一项用于实时在结构化数据上运行查询的Web服务。该数据库由Amazon.com用Erlang编写。它具有以下功能–高可用性和灵活性，几乎没有管理负担。
AllegroGraph和Amazon SimpleDB之间的区别：
| S.NO. | AllegroGraph | Amazon SimpleDB |
|---|---|---|
| 1. | Developed By Franz Inc. in 2004. | Developed By Amazon in 2007. |
| 2. | It is a high performance, persistent RDF store with additional support for Graph DBMS. | It is a hosted simple database service by Amazon, with the data stored in the Amazon Cloud. |
| 3. | It supports the ACID property. | It does not support the ACID property. |
| 4. | Server operating systems for AllegroGraph are Linux, OS X and Windows. | In Amazon SimpleDB, Hosted server operating systems. |
| 5. | Its primary database models are Document store, Graph DBMS and RDF store. | Its primary database model is the Key-value store. |
| 6. | It supports the Server-side scripting with JavaScript or Common Lisp. | It does not support the Server-side scripting. |
| 7. | Partitioning can be done with the Federation. | It does not support partitioning methods. |
| 8. | It uses SPARQL as a query language. | It does not support the SQL query language. |
| 9. | It supports two replication methods – Master-slave replication and Multi-master replication. | It supports replication methods. |
| 10. | It is not available as a cloud service. | It is available as a cloud service. |
| 11. | The programming languages supported are C#, Clojure, Java, Lisp, Perl, Python, Ruby, and Scala. | Programming languages supported are .Net, C, C++, Erlang, Java, PHP, Python, Ruby, and Scala. |