Java
Apache Shiro
Spring Boot
Spring Framework
Spring Cloud
Spring Data
Spring Batch
Spring Security
Spring Session
Spring AMQP
Linux-PAM
Apache Hive
Apache HBase
Apache Flume
ZooKeeper
Log4j2
Logback
NGINX
Apache
Python
OpenTSDB
MySql
PostgreSQL
Mongodb
Hibernate ORM
Moment.js
Thymeleaf
Apache FreeMarker