Name, Category
Hibernate, Database
iBatis / MyBatis, Database
Java Persistence API (JPA), Database
JDBC, Database
Protobuf, Serialization
Kryo deserialization, Serialization
SnakeYaml, Serialization
Spring JDBC, Database
Spring MVC, Web application framework
Struts, Web application framework
Thrift, RPC framework
XStream, Serialization