Struts 最初是 Jakarta项目中的一个子项目，并在2004年3月成为ASF的顶级项目。它通过采用 Java Servlet/JSP 技术，实现了基于Java EE Web应用的MVC设计模式的应用框架，是MVC经典设计模式中的一个经典产品
Apache Ignite is a horizontally scalable, fault-tolerant distributed in-memory computing platform for building real-time applications that can process terabytes of data with in-memory speed.
Jackrabbit Oak is a scalable, high-performance hierarchical content repository designed for use as the foundation of modern world-class web sites and other demanding content applications.
Apache Beam is a unified model for defining both batch and streaming data-parallel processing pipelines, as well as a set of language-specific SDKs for constructing pipelines and Runners for executing them on distributed processing backends, including Apache Flink, Apache Spark, Google Cloud Dataflow and Hazelcast Jet.
Apache CXF is an open source services framework. CXF helps you build and develop services using frontend programming APIs, like JAX-WS and JAX-RS. These services can speak a variety of protocols such as SOAP, XML/HTTP, RESTful HTTP, or CORBA and work over a variety of transports such as HTTP, JMS or JBI.
NetBeans 是开源软件开发集成环境，是一个开放框架，可扩展的开发平台，可以用于 Java，C/C++，PHP 等语言的开发，本身是一个开发平台，可以通过扩展插件来扩展功能
