1. ToroDB：
它是与MongoDB兼容的JSON文档存储，建立在PostgreSQL之上，并且是一项旨在弥补面向文档的数据库与SQL数据库之间的空白的技术。它是一个开源的NoSQL数据库，它运行在与MongoDB协议和API兼容的RDBMS之上。 ToroDB是一个开源项目，它读取NoSQL文档，自动推断其结构，并将其转换为一组表和列，这些表和列将数据表示为一种关系形式。
2. YugabyteDB：
它是一种高性能，云原生和开源分布式SQL数据库全局分布的文档存储。 YugabyteDB旨在使应用程序敏捷。 Yugabyte总部位于加利福尼亚州森尼韦尔。它作为Apache 2.0开源项目进行分发和开发。
YugabyteDB和ToroDB之间的区别：
| S.No. | ToroDB | YugabyteDB |
|---|---|---|
| 1 | Developed by 8Kdata and initially released on 2016. | Developed by Yugabyte Inc. and initially released on 2017. Current release on March 2020. |
| 2 | All OS with a Java 7 VM is server, operating systems of ToroDB. | Linux, OS X are server operating systems of YugabyteDB . |
| 3 | Primary database model is Document store. | Primary database model is Relational DBMS. |
| 4 | Absence of Secondary database models in ToroDB . | Secondary database models is Document store and Wide column store. |
| 5 | Absence of any supported programming languages. | C, C#, C++, Go, Java, JavaScript (Node.js), Python, Ruby are supporting programming languages. |
| 6 | Absence of APIs and other access methods in ToroDB. | YCQL, an SQL-based flexible-schema API with its roots in Cassandra Query Language, APIs and other access methods. |
| 7 | It has schema-free Data Schema. | Data scheme is depending on used data model. |
| 8 | Its Implementation language is Java. | Implementation language of YugabyteDB is C and C++. |
| 9 | Absence of Transaction concepts in ToroDB. | Distributed ACID with Serializable & Snapshot Isolation. Inspired by Google Spanner architecture is Transaction concepts. |
| 10 | Master-slave replication methods in ToroDB. | Replication methods is based on Raft distributed consensus protocol, minimum 3 replicas for continuous availability. |
| 11 | It has Eventual Consistency and Immediate Consistency concept. | Strong consistency on writes and tunable consistency on reads is consistency concept in YugabyteDB. |
| 12 | It has no concept of Foreign keys. | But it has concepts of Foreign keys. |