推荐几个Apache项目

Apache Shiro安全框架
http://shiro.apache.org/

Apache Shiro is a powerful and easy-to-use Java security framework that performs authentication, authorization, cryptography, and session management. With Shiro’s easy-to-understand API, you can quickly and easily secure any application – from the smallest mobile applications to the largest web and enterprise applications.

Apache Mahout分布式机器学习框架
http://mahout.apache.org/
The Apache Mahout™ machine learning library’s goal is to build scalable machine learning libraries.

Apache Qpid消息队列

http://qpid.apache.org/
Apache Qpid™ is a cross-platform Enterprise Messaging system which implements the Advanced Message Queuing Protocol (AMQP), providing message brokers written in C++ and Java, along with clients for C++, Java JMS, .Net, Python, and Ruby.

Apache UIMA 非结构化信息分析框架
http://uima.apache.org/
Our goal is to support a thriving community of users and developers of UIMA frameworks, tools, and annotators, facilitating the analysis of unstructured content such as text, audio and video.

Apache Traffic Server 强劲的HTTP代理服务器
http://trafficserver.apache.org/
Apache Traffic Server™ is fast, scalable and extensible HTTP/1.1 compliant caching proxy server. Formerly a commercial product, Yahoo! donated it to the Apache Foundation, and it is now an Apache TLP. Here’s a Traffic Server overview.