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LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.
SeaTunnel is a multimodal, high-performance, distributed, massive data integration tool.
Tiny, easily embeddable HTTP server in Java.
Barcode scanner library for Android, based on the ZXing decoder
MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.
esProc SPL is a JVM-based programming language designed for structured data computation, serving as both a data analysis tool and an embedded computing engine.
H2 is an embeddable RDBMS written in Java.
Database for Android and JVM - first and fast, lightweight on-device vector database
Eclipse Jetty® - Web Container & Clients - supports HTTP/3, HTTP/2, HTTP/1, websocket, servlets, and more
Alink is the Machine Learning algorithm platform based on Flink, developed by the PAI team of Alibaba computing platform.
A cli tool that helps signing and zip aligning single or multiple Android application packages (APKs) with either debug or provided release certificates. It supports v1, v2 and v3 Android signing scheme has an embedded debug keystore and auto verifies after signing.
Transactional schema-less embedded database used by JetBrains YouTrack and JetBrains Hub.
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.
NoSQL embedded document store for Java
MariaDB Embedded in Java JAR
Lightning Memory Database (LMDB) for Java: a low latency, transactional, sorted, embedded, key-value store
JQuick Java: a lightweight Java-like scripting language for rule engines. Declare, parse and execute business rules at runtime via XML or inline scripts—no restart needed. Java 8+, embeddable, with LSP and IDEA plugin support.
SquirrelJME is a Java ME 8 Virtual Machine for embedded and Internet of Things devices. It has the ultimate goal of being 99.9% compatible with the Java ME standard.
Provides a JAR and an AAR for embedding the Tor Onion Proxy into a Java or Android Program
This project focuses on automation of multi-level shadow root dom using java selenium. You can embed this plugin in your java selenium project.
Stream Ops is a fully embeddable data streaming engine and stream processing API for Java.
new Db4o GPL Source Code for Java7+ & .netstardard2.0 Android Xamarin..., the best database project to help you to learn how to make databases
Embedded OrientDB server for dropwizard
MariaDB Embedded in Java JAR