QuestDB is a high performance, open-source, time-series database

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

Micro second messaging that stores everything to disk

Ultra-fast matching engine written in Java based on LMAX Disruptor, Eclipse Collections, Real Logic Agrona, OpenHFT, LZ4 Java, and Adaptive Radix Trees.

Bind a java thread to a given core

Distributed Stream and Batch Processing

Lightning Memory Database (LMDB) for Java: a low latency, transactional, sorted, embedded, key-value store

Mappedbus is a low latency message bus for Java microservices utilizing shared memory. http://mappedbus.io

Microservices library - scalecube-services is a high throughput, low latency reactive microservices library built to scale. It features: API-Gateways, service-discovery, service-load-balancing, the architecture supports plug-and-play service communication modules and features. built to provide performance and low-latency real-time stream-processing

Time series monitoring and alerting platform.

A gulp of low latency Java

⚡ High performance and low latency Event Sourcing/CQRS framework

Java/MySQL real-time algorithmic trading using Interactive Brokers API

Low-latency java socket implementation (using shared memory)

中泰证券xtp java api for win\linux\mac

Java Performance

core fluxtion static event processor generator tool and runtime components

Low-latency WebSocket Server

High performance and low latency Exchange Collections written in Java