Main user groups: for 13 years in a row, Apache HTTP server is the global leader in Web servers, serving1.10.30 billion websites. Apache Tomcat is an open source software, which can execute Java Servlet and JavaServer web technology. Apache and Tomcat are relatively independent, users can access Tomcat resources through Apache, and vice versa, they can be on the same server. Apache Tomcat is an excellent open source software developed by the best developers in the world.
User groups: Tomcat has promoted the development of large and key Web applications in many different industries, including ETrade, Wal-Mart, Weather Channel and EMC. Apache Lucene is a high-performance, full-featured text search engine library, which is written in Java language. Apache Lucene is suitable for any application that needs full-text search, especially cross-platform applications. Originally written in Java, Lucene has been transplanted to other languages, including Delphi, Perl, C#, C++, Python, Ruby and PHP.
User groups: Apple Online Retail Store, CNET, Netflix, Wikipedia, Yelp, Comcast, LinkedIn, TheSmithsonian, many government agencies (FDA, DOD, etc. ), Technorati, Internet archives (such as context search of AOL Yellow Pages). Apache Struts is an open source Web application framework for developing Java EE Web applications. Apache Struts uses and extends Java Servlet API to encourage developers to adopt Model View Controller (MVC) architecture.
User groups: IRS, Boston Globe, Amnesty International, Sears, Alamo Car Rental, National Car Rental, Travelocity, etc. Apache Geronimo is an open source J2EE server of Apache Software Foundation, which integrates many advanced technologies and design concepts. Most of these technologies and concepts come from independent projects, and the configuration and deployment models are also different. The goal of Geronimo project is to produce a server runtime framework, which brings together the best open source alternatives into a unified and easy-to-use model to meet the needs of developers and system administrators.
User groups: AMD, chariot solutions, IBM, Virtuas, etc. Apache Ant is a Java-based development tool provided by Apache Software Foundation. It is a tool that automates the steps of software compilation, testing and deployment, and is mainly used for software development in Java environment.
User base: Most Java is designed to manage a large amount of information flow. For example, New York uses Apache Ant to manage the largest youth program in the United States, which can update the records of more than 250,000 students in real time every day. Apache Cocoon is a framework built around the concept of separation based on Spring framework. Under this framework, all processes are connected linearly through predefined processing components, and input and output can be processed in pipeline order.
User groups: Apache Lenya, Daisy CMS, Hippo CMS, Mindquarry, etc. Apache Cocoon is usually used as a tool for data extraction, transformation and loading, or as a transit point for data transmission between systems. SpamAssassin is a famous anti-spam engine developed by Apache, and the mail system is fully integrated with SpamAssassin anti-spam engine. SpamAssassin contains a variety of spam monitoring technologies, including spam monitoring based on DNS and checksum, Bayesian filtering, external programs, blacklists and online databases.
User groups: SpamAssassin is adopted by thousands of independent developers and users, and is regarded as the main component of many commercial products. \ Apache Axis is a framework based on SOAP applications, and its core is a SOAP processor, which is used to develop various applications including clients, servers and SOAP gateways.
User groups: WSO2, MuleSource IBM, Progress Software, etc. Apache log service project mainly provides application debugging and supervision log service. The products of Apache Logging Services project include three logging frameworks, namely log4j for Java, log4cxx for C++ and Log4Net for Microsoft. NET framework. Apache log service is also used for log viewer and analysis tool Chainsaw.
User groups: Apache logs are everywhere in Java development. Commons is an Apache project that focuses on all aspects of reusable Java components. The Apache Commons project consists of three parts:
* commons propeller-the repository of reusable Java components;
Development workspace of commons sandbox Java component;
* Commons Dormant- the repository of sandbox components.
User groups: Amazon web services, Google.