oVirt是基于KVM虚拟化组建私有云平台的管理工具。oVirt以web界面的方式管理KVM虚拟化环境，主要由Engine和Node两部分组成，Engine是oVirt中的管理节点，提供web界面与用户交互，使Node节点管理可视化。

Apache Flink is an open source platform for distributed stream and batch data processing. Flink’s core is a streaming dataflow engine that provides data distribution, communication...

Matter.js is a JavaScript 2D rigid body physics engine for the web

A 2D rigid body physics engine for the web written in JavaScript.

A step-by-step introduction to making games and interactive media with the Pixi rendering engine.

A free, functional, immediate-mode GUI framework for rapid development of desktop applications written in Rust, supported by the Mozilla WebRender rendering engine.

The Open Policy Agent (OPA) is an open source, general-purpose policy engine that enables unified, context-aware policy enforcement across the entire stack.<br/><br/>

The Open Policy Agent (OPA) is an open source, general-purpose policy engine that enables unified, context-aware policy enforcement across the entire stack.

JFinal 是一个 Web MVC + ORM + AOP + Template Engine 四合一的极简、极轻量级的Java应用开发框架.

Nginx (engine x) 是一个高性能的HTTP和反向代理服务器，也是一个IMAP/POP3/SMTP服务器。