OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

a fast, scalable, multi-language and extensible build system

High Performance Inter-Thread Messaging Library

Generate diagrams from textual description

CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.

Apache Iceberg

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

Example code for the book Microservice patterns

Simple Binary Encoding (SBE) - High Performance Message Codec

A High Dynamic Range (HDR) Histogram

PlantUML Online Server

Contains official Standard Library for PlantUML

AsciiDoc plugin for products on the IntelliJ platform (IDEA, RubyMine, etc)

KouChat

clone of docfetcher from sourceforge

Fix for detection of UTF-8 + emoji. Auto-exported from code.google.com/p/juniversalchardet