Java

NATS clientnats-io/nats.java

A Java client library for the NATS messaging system, enabling high-performance publish-subscribe and request-reply communication.

FreeJ2MEhex007/freej2me

A free J2ME emulator with libretro, AWT, and SDL2 frontends for running Java mobile games.

Active Directory Control PathsANSSI-FR/AD-control-paths

A tool for auditing and visualizing control paths in Active Directory to identify privilege escalation and resource access risks.

GeoFire for Javafirebase/geofire-java

A Java library for storing and querying geographic locations in realtime using Firebase.

amazon-kinesis-clientawslabs/amazon-kinesis-client

A Java client library for building scalable, fault-tolerant applications that consume and process data from Amazon Kinesis Data Streams.

Restlet Frameworkrestlet/restlet-framework-java

The first REST API framework for Java, offering a unified approach to building web clients and servers with minimal dependencies.

dtd-finderGoSecure/dtd-finder

A security tool that identifies DTDs in filesystem snapshots and generates XXE payloads using those local DTDs.

com.google.oauth-client/google-oauth-clientgoogleapis/google-oauth-java-client

A Java library for OAuth 1.0a and OAuth 2.0 authorization, designed to work with any OAuth service on the web.

Cassandrecassandre-tech/cassandre-trading-bot

A Spring Boot starter for creating Java cryptocurrency trading bots that handles exchange connections and trading operations.

SQLLinejulianhyde/sqlline

A command-line shell for issuing SQL to relational databases via JDBC connections.

Android-Image-Filterragnraok/android-image-filter

An Android library providing 19 efficient image filters with NDK optimization for real-time processing.

Membrane Service Proxymembrane/service-proxy

A lightweight, extensible API gateway written in Java with native OpenAPI support, SOAP/XML compatibility, and container optimization.

CosIdAhoo-Wang/CosId

A universal, flexible, and high-performance distributed ID generator for Java applications.

Bladecoderbladecoder/bladecoder-adventure-engine

A LibGDX-based engine and editor for creating cross-platform point-and-click adventure games with minimal programming.

Marathon RunnerMarathonLabs/marathon

A fast, platform-independent test runner for Android and iOS that optimizes for execution speed and stability.

Airliftairlift/airlift

A Java framework for building production-ready REST services with built-in configuration, metrics, logging, and dependency injection.

Scalar DBscalar-labs/scalardb

A universal HTAP engine providing ACID transactions and real-time analytics across diverse databases.

ScaleCube Servicesscalecube/scalecube-services

A high-throughput, low-latency reactive microservices library with built-in service discovery, load balancing, and pluggable API gateways.

ScaleCubescalecube/scalecube

A high-throughput, low-latency reactive microservices library with built-in service discovery, load balancing, and pluggable API gateways.

node-androidInstantWebP2P/node-android

Run Node.js applications on Android by reimplementing Node.js APIs in Java.

libaddressinputgooglei18n/libaddressinput

Google's open-source library for international postal address validation and form generation.

TypeToolsjhalterman/typetools

A zero-dependency Java library for resolving and reifying generic type information from classes, interfaces, lambdas, and methods.

react-native-billingidehub/react-native-billing

A React Native bridge for implementing Google Play In-App Billing and subscriptions on Android.

easy-batchj-easy/easy-batch

A simple, lightweight batch processing framework for Java designed for ETL jobs.

Java Path Finder (JPF)javapathfinder/jpf-core

An extensible software model checking framework for Java bytecode programs to detect concurrency defects and runtime errors.

Chart-FXGSI-CS-CO/chart-fx

A high-performance JavaFX charting library for real-time scientific data visualization, handling up to 5 million data points at 25 Hz.

asynchbaseOpenTSDB/asynchbase

A fully asynchronous, non-blocking, thread-safe, high-performance Java client for HBase.

stanford-corenlp-pythondasmith/stanford-corenlp-python

A Python wrapper and JSON-RPC server for Stanford CoreNLP, providing NLP tools like parsing, tagging, and coreference resolution.

Chemistry Development Kitcdk/cdk

An open-source Java library for cheminformatics and bioinformatics, providing algorithms for molecular representation, analysis, and data processing.

react-native-dialogsaakashns/react-native-dialogs

Android-only React Native wrapper for Material Design dialogs, providing customizable alert, prompt, picker, and progress dialogs.

Wiki2Vec. Getting Word2vec vectors for entities and word from Wikipedia Dumpsidio/wiki2vec

Generate Word2Vec vectors for DBpedia entities from Wikipedia dumps, linking words and topics to structured knowledge.

java-slack-sdkslackapi/java-slack-sdk

A Java idiomatic SDK for building Slack apps, featuring the Bolt framework and a flexible API client for any JVM language.

Glide Bitmap Poolamitshekhariitbhu/GlideBitmapPool

A memory management library for Android that reuses bitmap memory to reduce garbage collection and improve app performance.

postaldrewr/postal

A Clojure library for constructing and sending RFC822-compliant email messages with SMTP, sendmail, and encryption support.

Event Sourcing and CQRS Examplesandreschaffer/event-sourcing-cqrs-examples

A practical example of Event Sourcing and CQRS patterns applied to a minimalistic banking domain.

java-sdkwatson-developer-cloud/java-sdk

Java SDK for integrating with IBM Watson AI services like Assistant, Discovery, and Personality Insights.