Stars
High Performance Inter-Thread Messaging Library
A high performance caching library for Java
Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.
jsoup: the Java HTML parser, built for HTML editing, cleaning, scraping, and XSS safety.
A collection of source code generators for Java.
Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more
Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
A damn simple library for building production-ready RESTful web services.
Efficient reliable UDP unicast, UDP multicast, and IPC message transport
📈 Capturing JVM- and application-level metrics. So you know what's going on.
Asynchronous Http and WebSocket Client library for Java
Statistical Machine Intelligence & Learning Engine
Apache Camel is an open source integration framework that empowers you to quickly and easily integrate various systems consuming or producing data.
A diagram of the Android Activity / Fragment lifecycle
MockServer enables easy mocking of any system you integrate with via HTTP or HTTPS with clients written in Java, JavaScript and Ruby. MockServer also includes a proxy that introspects all proxied t…
Fault tolerance and resilience patterns for the JVM
Real-time transport layer for Java AI agents. Build once with @Agent — deliver over WebSocket, SSE, gRPC, and WebTransport/HTTP3. Talk MCP, A2A and AG-UI.
Java annotation processor to create immutable objects and builders, for records too. Sweep boilerplate code under the rug!
Log analyser / visualiser for Java HotSpot JIT compiler. Inspect inlining decisions, hot methods, bytecode, and assembly. View results in the JavaFX user interface.
Manifold is a Java compiler plugin, its features include Metaprogramming, Properties, Extension Methods, Operator Overloading, Templates, a Preprocessor, and more.
GreenDroid is a development library for the Android platform. It makes UI developments easier and consistent through your applications.
Security engine for Java (authentication, authorization, multi frameworks): OpenID Connect, SAML2, CAS, OAuth, LDAP, JWT...
A p2p, secure file storage, social network and application protocol
A material-design Hacker News Android reader
GS Collections has been migrated to the Eclipse Foundation, re-branded as Eclipse Collections. https://www.eclipse.org/collections/