- ms sql
- postgresql
- hibernate
- jdbi
- jtds
- fastnate
- jooq
- redis
- caffein
- ehcaceh
- spring
- rest services+js fw
- static site generator (orchid, jbake)
- play
- spring
- jax-rs (jersey)
- helidon
- vert.x
- micronaut
- javalin
- light4j
- graphql
- kafka
- rabbitmq
- activemq
- elastic
- lucene
- zookeeper
- logstash
- kibana
- rxjava (reactive x)
- jdk9+
- akka
- jaxb
- dom4j
- jackson
- swt (embed)
- jasper
- fop
- pebble
- thymeleaf
- pdf box
- java jdk 10-11
- commons
- joda
- vavr
- commons
- guava
- dagger (tiger)
- kryo
- tomcat
- netty
- wildfly
- glassfish
- undertow
- hystrix
- Resilience4j
- twelve monkeys
- maven
- bazel
- idea
- error prone
- junit
- truth
- FXGL
- jol
- drools
- activiti
- javafx
- ulc canoo RIA Suite
- use python...
- jaeger