1.ReactiveX / RxJava
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
+41 stars
from 48,116 · score 3.74
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2.hivemq / hivemq-mqtt-client
HiveMQ MQTT Client is an MQTT 5.0 and MQTT 3.1.1 compatible and feature-rich high-performance Java client library with different API flavours and backpressure support
+19 stars
from 1,106 · score 3.00
3.apple / servicetalk
A networking framework that evolves with your application
+16 stars
from 1,031 · score 2.83
4.scalecube / scalecube-services
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
+2 stars
from 637 · score 1.10
5.AOL-archive / cyclops
An advanced, but easy to use, platform for writing functional applications in Java 8.
+1 stars
from 1,323 · score 0.69