Apache Log4j 2 is a versatile, feature-rich, efficient logging API
Provides an extension of the Spring programming model
Java library that enables cross-platform access to popular native APIs
MongoDB object-document mapper in Java
Apache Shiro
Java libraries for writing microservices
An extensible Java library for HTTP request and response logging
Micro second messaging that stores everything to disk
Java MQTT lightweight broker
PartiQL libraries and tools in Kotlin.
The best file downloader library for Android
An open source Valkey client library that supports Valkey and Redis
Asynchronous streaming communication for Clojure
a Java class library for database application development
Cross-platform C++ library for use as a default application framework.
Portable command line options parsing
Clojure dialect for Flutter and Dart
Java bindings for the Wheefun Options Parsing Library
A collection of reflection facades for the Java Programming Language
Reactive Microservices for the JVM
Lightweight HTTP framework built in Java
Represents JSON doc as a nodes tree for transforms like XPATH & XSLT.
Java libraries for buiding IIOP and Web Services
Java util library with many goodies that will blow Your mind.