Jgroups
- middleware
 - written_in: java
 - http://www.jgroups.org/
 - repo: https://github.com/belaban/JGroups
 
Features
- Cluster creation and deletion. Cluster nodes can be spread across LANs or WANs
 - Joining and leaving of clusters
 - Membership detection and notification about joined/left/crashed cluster nodes
 - Detection and removal of crashed nodes
 - Sending and receiving of node-to-cluster messages (point-to-multipoint)
 - Sending and receiving of node-to-node messages (point-to-point)