GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
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Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.
PowerMock is a Java framework that allows you to unit test code normally regarded as untestable.
A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others
Java dataframe and visualization library
Eclipse Collections is a collections framework for Java with optimized data structures and a rich, functional and fluent API.
A modular and portable open source XMPP client library written in Java for Android and Java (SE) VMs
SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a space-efficient snapshot through structural sharing. It is log-structured and never overwrites data. SirixDB uses a novel page-level versioning approach.
Gradle/Maven plugin to package Java applications as native Windows, MacOS, or Linux executables and create installers for them.
True Object-Oriented Java Web Framework without NULLs, Static Methods, Annotations, and Mutable Objects
JQuick-Pdf is an enterprise-grade Java PDF generation framework. It provides HTML-like declarative syntax and supports more than 30 kinds of graphs, greatly simplifying complex PDF report creation while retaining full native pdfbox(since version 4.0.0) APIs.
:iphone: Wrapper Appium Framework in Java which supports Automation of Mobile and Tablet apps.
A library that simplifies error handling for Functional Programming in Java
Declarative Java engine for structured documents. Automatic layout, pagination, reusable templates and themes. Render print-ready PDF, export editable PowerPoint, or generate semantic DOCX.
Simple tuples to use with RxJava [STABLE]
Fast & memory efficient hash tables for Java
Anahata ASI - Artificial Super Intelligence - Cross-Platform, Modular, Enterprise Ready, Open Source, Pure Java, AGI and ASI Containers. Context Window Garbage Collector, Stateful Toolkits, Flight Recorder. Autonomous Observable Auditable JVM Agent with JIT java code execution. Anahata ASI SDK, Anahata ASI Desktop, Anahata ASI Studio - NetBeans.
Compile-time annotation processor for Spring Boot. Generates predictable REST APIs, DTOs, JSON Patch endpoints, and N+1 safe JPA repositories without runtime reflection.
Immuto - Java Records-first object mapper.An annotation processor generates type-safe mapper implementations at compile time; the generated code calls each target record's canonical constructor directly - zero runtime reflection, sealed class support, full Java 21+ idioms.
vertx-values enhances JSON handling in Vert.x by providing codecs for the immutable JSON objects from the json-values library. It eliminates the need for copying JSON data during transmission over the Event Bus, reducing garbage collection overhead and boosting performance.