Group: Engio

Mbassador is a fast and flexible event bus system following the publish subscribe pattern. It is designed for ease of use and aims to be feature rich and extensible while preserving resource efficiency and performance. It provides non-blocking iterators and minimal write contention with low memory footprint. Some features: declarative handler definition via annotations, sync and/or async event delivery, weak or strong references, configurable ...

Pips offers stream like data producers and consumer for data points. Considering the numerous great stream based libraries it is quite superfluous but still used in some of my projects.

Group Engio WSO2

Benchmarking suite for Java macro benchmarks. Configure and run workloads to stress test your application. Measure runtime performance using your preferred data collector and plotter.