* HTTP Server
  * [Tomcat](https://github.com/apache/tomcat) 7
  * [Tomcat](https://github.com/apache/tomcat) 8
  * [Spring Boot](https://github.com/spring-projects/spring-boot) Web 4.x
  * Spring MVC 3.x, 4.x with servlet 3.x
  * [Nutz Web Framework](https://github.com/nutzam/nutz)  1.x
  * [Struts2 MVC](http://struts.apache.org/)  2.3.x -> 2.5.x 
  * [Resin](http://www.caucho.com/resin-4.0/) 3
  * [Resin](http://www.caucho.com/resin-4.0/) 4
  * [Jetty Server](http://www.eclipse.org/jetty/) 9
* HTTP Client
  * [Feign](https://github.com/OpenFeign/feign) 9.x
  * [Netflix Spring Cloud Feign](https://github.com/spring-cloud/spring-cloud-netflix/tree/master/spring-cloud-starter-feign) 1.1.x, 1.2.x, 1.3.x
  * [Okhttp](https://github.com/square/okhttp) 3.x
  * [Apache httpcomponent HttpClient](http://hc.apache.org/) 4.2, 4.3
  * [Spring RestTemplete](https://github.com/spring-projects/spring-framework) 4.x
  * [Jetty Client](http://www.eclipse.org/jetty/) 9
* JDBC
  * Mysql Driver 5.x, 6.x
  * Oracle Driver
  * H2 Driver
  * [Sharding-JDBC 1.5.x](https://github.com/shardingjdbc/sharding-jdbc)
  * PostgreSQL Driver 8.x, 9.x, 42.x
* RPC Frameworks
  * [Dubbo](https://github.com/alibaba/dubbo) 2.5.3
  * [Dubbox](https://github.com/dangdangdotcom/dubbox) 2.8.4
  * [Motan](https://github.com/weibocom/motan) 0.2
  * [gRPC](https://github.com/grpc/grpc-java) 1.6+
* NoSQL
  * Redis
    * [Jedis](https://github.com/xetorthio/jedis) 2.8
  * [MongoDB Java Driver](https://github.com/mongodb/mongo-java-driver) 2.13-2.14,3.3+
  * Memcached Client
    * [Spymemcached](https://github.com/couchbase/spymemcached) 2.x
    * [Xmemcached](https://github.com/killme2008/xmemcached) 2.x
* Service Discovery
  * [Netflix Eureka](https://github.com/Netflix/eureka) 
* Spring Ecosystem
  * Spring Core Async SuccessCallback/FailureCallback/ListenableFutureCallback 4.x
* OpenTracing community supported
  * Motan
  * Hprose-java