All Algorithms implemented in Java

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

a fast, scalable, multi-language and extensible build system

Redisson - Valkey & Redis Java client. Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue,…

Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Git Server with CI/CD, Kanban, and Packages. Seamless integration. Unparalleled experience.

Style and Grammar Checker for 25+ Languages

Change data capture for a variety of databases. Please log issues at https://issues.redhat.com/browse/DBZ.

OpenRefine is a free, open source power tool for working with messy data and improving it

Apereo CAS - Identity & Single Sign On for all earthlings and beyond.

The Metadata Platform for your Data and AI Stack

LangChain4j is an open-source Java library that simplifies the integration of LLMs into Java applications through a unified API, providing access to popular LLMs and vector databases. It makes impl…

Apache ShenYu is a Java native API Gateway for service proxy, protocol conversion and API governance.

Test Automation Made Simple

A damn simple library for building production-ready RESTful web services.

📌 a missing Java std lib(simple & 0-dependency) for framework/middleware, provide an enhanced InheritableThreadLocal that transmits values between threads even using thread pooling components.

An annotation processor for generating type-safe bean mappers

Digital logic design tool and simulator

A comprehensive Domain-Driven Design example with problem space strategic analysis and various tactical patterns.

OpenAI Api Client in Java

SuperSonic is the next-generation AI+BI platform that unifies Chat BI (powered by LLM) and Headless BI (powered by semantic layer) paradigms.

Java bytecode engineering toolkit

Java implementation of the Tron whitepaper

High performance non-blocking webserver

LibRec: A Leading Java Library for Recommender Systems, see

Java implementation of RSocket

A Java library for technical analysis.

Eclipse Paho Java MQTT client library. Paho is an Eclipse IoT project.