1. [Jmxtrans](https://github.com/jmxtrans/jmxtrans) This is effectively the missing connector between speaking to a JVM via JMX on one end and whatever logging / monitoring / graphing package that you can dream up on the other end. License: ?, [](https://github.com/jmxtrans/jmxtrans).

1. [Apache Camel](https://github.com/apache/camel) Apache Camel is a powerful open source integration framework based on known Enterprise Integration Patterns with powerful Bean Integration. License: [Apache 2](http://www.apache.org/licenses/LICENSE-2.0) , [](https://github.com/apache/camel). 

1. [Apache CXF](http://cxf.apache.org/) 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. License: [Apache 2](http://www.apache.org/licenses/LICENSE-2.0). 

1. [Instagram Ig json parser](https://github.com/Instagram/ig-json-parser) Fast JSON parser for java projects, [](https://github.com/Instagram/ig-json-parser). [User guide](https://github.com/Instagram/ig-json-parser#getting-started) and [Hello World examples](https://github.com/Vedenin/useful-java-links/tree/master/helloworlds/3.8-json/ig_json_parser). License: [BSD 3](https://en.wikipedia.org/wiki/BSD_licenses#3-clause_license_.28.22Revised_BSD_License.22.2C_.22New_BSD_License.22.2C_or_.22Modified_BSD_License.22.29). 

1. [Jackson](http://wiki.fasterxml.com/JacksonHome) - Similar to GSON but has performance gains if you need to instantiate the library more often. Subprojects: [Jackson core](https://github.com/FasterXML/jackson-core) Core part of Jackson, [Jackson databind](https://github.com/FasterXML/jackson-databind) Core part of Jackson that defines Streaming API as well as basic shared abstractions, [](https://github.com/FasterXML/jackson-core). [User guide](https://github.com/FasterXML/jackson-docs) and [Hello World examples](https://github.com/Vedenin/useful-java-links/tree/master/helloworlds/3.8-json/jackson). License: [Apache 2](http://www.apache.org/licenses/LICENSE-2.0). 

1. [JSON.simple](https://github.com/fangyidong/json-simple) - A simple Java toolkit for JSON. You can use json-simple to encode or decode JSON text, [](https://github.com/fangyidong/json-simple). [User guide](https://code.google.com/archive/p/json-simple/wikis) and [Hello World examples](https://github.com/Vedenin/useful-java-links/tree/master/helloworlds/3.8-json/json_simple). License: [Apache 2](http://www.apache.org/licenses/LICENSE-2.0). 

1. [Jayway JsonPath](https://github.com/jayway/JsonPath) Java JsonPath implementation, [](https://github.com/jayway/JsonPath). [User guide](https://github.com/jayway/JsonPath#getting-started) and [Hello World examples](https://github.com/Vedenin/useful-java-links/tree/master/helloworlds/3.8-json/json_path). License: [Apache 2](http://www.apache.org/licenses/LICENSE-2.0). 

*Servers which accept client requests and direct them to the approriate backend service.*

*Tools which handle the build cycle and dependencies of an application.*

1. [Google Bazel](http://bazel.io) - Build tool from Google that builds code quickly and reliably. License: [Apache 2](http://www.apache.org/licenses/LICENSE-2.0) , github's star - 2809. 

1. [Gradle](http://gradle.org/) - Incremental builds which are programmed via Groovy instead of declaring XML. Works well with Maven's dependency management. License: [Apache 2](http://www.apache.org/licenses/LICENSE-2.0) , github's star - 2465. 

1. [Apache Ant](http://ant.apache.org/) - pache Ant is a Java library and command-line tool whose mission is to drive processes described in build files as targets and extension points dependent upon each other. Subproject: [Apache AntUnit](https://projects.apache.org/project.html?ant-antunit) - testing Ant task, [Apache Compress Ant Library](https://projects.apache.org/project.html?ant-compress) - support additional archive formats, [Apache Ivy](https://projects.apache.org/project.html?ant-ivy) - very powerful dependency manager, [Apache IvyDE](https://projects.apache.org/project.html?ant-ivyde) - IvyDE plugin for Eclipse. License: [Apache 2](http://www.apache.org/licenses/LICENSE-2.0).