Zipkin is a distributed tracing system

Logstash - transport and process your logs, events, or other data

OpenRefine is a free, open source power tool for working with messy data and improving it

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

Fibers, Channels and Actors for the JVM

Simple Binary Encoding (SBE) - High Performance Message Codec

Log analyser / visualiser for Java HotSpot JIT compiler. Inspect inlining decisions, hot methods, bytecode, and assembly. View results in the JavaFX user interface.

Source code of core octotron system