VisualVM is an All-in-One Java Troubleshooting Tool
Kotlin wrappers for popular JavaScript libraries
The Enterprise-ready testing and specification framework
Enables in-process caching of secrets for Java applications
PDFsam, a desktop application to split, merge, mix, rotate PDF files
Advanced manager and monitor for Apache Tomcat
A Minecraft plugin API
Replacement for the Java date and time classes prior to Java SE 8
Enhancing Java Stream API
A Python 3 implementation built on GraalVM
The modern Essentials suite for Spigot and Paper
Exposing the JDK Flight Recorder as a Spring Boot Actuator Endpoint
Console-based JVM monitoring tool
Manifold is a Java compiler plugin, features include Metaprogramming
Object-functional library that runs with Java 8+
A Java to iOS Objective-C translation tool and runtime
An extremely easy way to perform background processing in Java
Apache InLong - a one-stop integration framework for massive data
TCP/HTTP/UDP/QUIC client/server with Reactor over Netty
I2P is an anonymizing network to securely communicate
Maven/Gradle alternative with a twist: its a single Java file
Development tool to help programmers write standard Java code
A reverse engineering suite (decompiler, editor, debugger and more)
Apache Log4j 2 is a versatile, feature-rich, efficient logging API
An in-memory file system for Java 8+