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

A simple expressive web framework for java. Spark has a kotlin DSL https://github.com/perwendel/spark-kotlin

Simple OAuth library for Java

Unified Queries for Java

Apache Shiro

requery - modern SQL based query & persistence for Java / Kotlin / Android

Unirest in Java: Simplified, lightweight HTTP client library.

Google Cloud Client Library for Java

Dead-Simple Packaging and Deployment for JVM Apps

FlexyPool adds metrics and failover strategies to a given Connection Pool, allowing it to resize on demand.

Build a GraphQL service in seconds

A new JDBC driver for PostgreSQL aimed at supporting the advanced features of JDBC and Postgres

Persistent (immutable) collections for Java and Kotlin

react.js on server-side java (with rhino or nashorn)

OACC (Object ACcess Control) is an advanced Java Application Security Framework

Asynchronous PostgreSQL client for Java and the JVM