RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.

Desktop/Android/HTML5/iOS Java game development framework

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

Vert.x is a tool-kit for building reactive applications on the JVM

Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, R…

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID…

Ant Media Server — Ultra-low latency streaming engine with WebRTC (~0.5s), SRT, RTMP, HLS, CMAF, adaptive bitrate, transcoding & scaling

Hackpad is a web-based realtime wiki.

Security engine for Java (authentication, authorization, multi frameworks): OpenID Connect, SAML2, CAS, OAuth, LDAP, JWT...

Embulk: Pluggable Bulk Data Loader.

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A local proxy written in Java

Yoke is a middleware framework for Vert.x

Flow-based programming for the Vert.x application platform.

RoboVM Gradle plugin

AuroraはI/OをシャーディングするためのJava/Scala向けライブラリです。

Edge - Web Application Framework for Vert.x

Post the subject of received mail and specified hashtag to twitter with OAuth on Google App Engine and Wicket.

JIRA IRC Bot Plugin