A one-time password (HOTP/TOTP) library for Java
Изучение Java SE и пример кода
An embeddable write-once key-value store written in Java
Java agent that enables class reloading in a running JVM
Write once run anywhere native mobile apps using with Java 8 or Kotlin. Supports iOS (iPhone/iPad), Android, Windows (UWP) & others
Java client for InfluxDB
OpenTracing API for Java
RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.