DuckDB is an analytical in-process SQL database management system
嵌入式分析型SQL数据库管理系统，适用于快速数据分析
AliSQL is a MySQL branch originated from Alibaba Group. Fetch document from Release Notes at bottom.
阿里巴巴开发的MySQL分支，包含增强与优化
MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
MySQL的社区开发分支，功能丰富且稳定的开源SQL服务器
SQL powered operating system instrumentation, monitoring, and analytics.
基于SQL的操作系统监控与分析工具
CockroachDB — the cloud native, distributed SQL database designed for high availability, effortless scale, and control over data placement.
云原生分布式SQL数据库，具备高可用性和水平扩展能力
Lovefield is a relational database for web apps. Written in JavaScript, works cross-browser. Provides SQL-like APIs that are fast, safe, and easy to use.
面向Web应用的关系型数据库，提供类SQL API，跨浏览器兼容