CitizensDev / Citizens2

Citizens - the premier plugin and API for creating server-side NPCs in Minecraft.

lakernote / easy-postman

An open-source API debugging and stress testing tool inspired by Postman and a simplified JMeter, optimized for developers with a clean UI and powerful features.

Esri / geometry-api-java

The Esri Geometry API for Java enables developers to write custom applications for analysis of spatial data. This API is used in the Esri GIS Tools for Hadoop and other 3rd-party data processing solutions.

in28minutes / jpa-with-hibernate

Master JPA using Hibernate as the implementation. Learn the basics of JPA - entities, relationships, entity manager, annotations, JPQL and Criteria API. Take a step into the advanced world of JPA - caching, performance tuning(n + 1 queries), mapping inheritance hierarchies. Get a peek into the magic of Spring Data JPA & Spring Data Rest.

Countly / countly-sdk-android

Countly Digital Analytics Android SDK

imfangs / dify-java-client

Dify Java Client 是一个用于与 Dify 平台进行交互的 Java 客户端库。它提供了对 Dify 应用 API 和知识库 API 的完整支持，让 Java 开发者能够轻松地将 Dify 的生成式 AI 能力集成到自己的应用中。

smart-cloud / smart-cloud

一站式 Spring Cloud 微服务脚手架 —— 让微服务开发像搭积木一样简单。支持服务合并部署与拆分部署、接口加解密签名、日志数据 脱敏、接口数据mock、接口文档自动生成、请求幂等校验、接口日志&&sql日志切面打印、分表分库分布式事务、国际化语言、接口监控及服务监控等

devoxx / DevoxxGenieIDEAPlugin

DevoxxGenie is an agentic plugin for IntelliJ IDEA that uses local LLM's (Ollama, LMStudio, GPT4All, Jan and Llama.cpp) and Cloud based LLMs to help review, test, explain your project code. Latest version now also supports Spec Driven Development with CLI Runners.

pivovarit / parallel-collectors

Parallel Collectors is a toolkit easing parallel collection processing in Java using Stream API.

restlet / restlet-framework-java

The first REST API framework for Java

epam / ai-dial-core

The main component of AI DIAL, which provides unified API to different chat completion and embedding models, assistants, and applications

googleapis / google-oauth-java-client

Google OAuth Client Library for Java

IntellectualSites / PlotSquared

PlotSquared - Reinventing the plotworld

membrane / api-gateway

API Gateway bridging modern and legacy APIs with WSDL-to-OpenAPI, SOAP-to-REST, XML, OAuth2, and GraphQL.

JanssenProject / jans

The Janssen Project is a home for open source IAM components, featuring Auth Server (OAuth/OpenID), Agama low-code identity orchestration, and the Cedarling policy decision point. The "Janssen Server" distributions bundle IAM components under one control plane.

CommandAPI / CommandAPI

A Bukkit/Spigot API for the command UI introduced in Minecraft 1.13

line / line-bot-sdk-java

LINE Messaging API SDK for Java

scalecube / scalecube-services

Microservices library - scalecube-services is a high throughput, low latency reactive microservices library built to scale. It features: API-Gateways, service-discovery, service-load-balancing, the architecture supports plug-and-play service communication modules and features. built to provide performance and low-latency real-time stream-processing

Hakky54 / mutual-tls-ssl

🔐 Tutorial of setting up Security for your API with one way authentication with TLS/SSL and mutual authentication for a java based web server and a client with both Spring Boot. Different clients are provided such as Apache HttpClient, OkHttp, Spring RestTemplate, Spring WebFlux WebClient Jetty and Netty, the old and the new JDK HttpClient, the old and the new Jersey Client, Google HttpClient, Unirest, Retrofit, Feign, Methanol, vertx, Scala client Finagle, Featherbed, Dispatch Reboot, AsyncHttpClient, Sttp, Akka, Requests Scala, Http4s Blaze, Kotlin client Fuel, http4k, Kohttp and ktor. Also other server examples are available such as jersey with grizzly. Also gRPC, WebSocket and ElasticSearch examples are included

spring-petclinic / spring-petclinic-rest

REST version of the Spring Petclinic sample application

dropbox / dropbox-sdk-java

A Java library for the Dropbox Core API.

AllTick-Official / alltick-realtime-forex-crypto-stock-tick-finance-websocket-api

AllTick real-time financial market data API with REST and WebSocket access to stocks, forex, crypto, commodities, and indices.

xipki / xipki

XiPKI: Compact open source PKI (CA, OCSP responder, certificate protocols ACME, CMP, EST, SCEP), with full support of PQC MLDSA (Dilithium) and MLKEM (Kyber).

slackapi / java-slack-sdk

Slack Developer Kit (including Bolt for Java) for any JVM language

gentics / mesh

Gentics Mesh - The open source headless CMS for developers

MrMicky-FR / FastBoard

Lightweight packet-based scoreboard API for Bukkit plugins, with 1.7.10 to 26.2 support.

TencentCloud / tencentcloud-sdk-java

Tencent Cloud API 3.0 SDK for Java

binance / binance-connector-java

Simple Java connector to Binance Spot API

Erudika / para

Multitenant backend server for building web and mobile apps rapidly. The backend for busy developers. (self-hosted or hosted)

scireum / s3ninja

S3 ninja emulates the Amazon S3 API for developement and test purposes

jeecgboot / autopoi

AutoPOI is an intelligent wrapper around POI that simplifies API usage. AutoPOI是对POI的智能化封装，简化API使用，通过极简代码实现Excel导入导出和Word模板导出，帮助无基础用户轻松自动化处理文档。

hapifhir / hapi-fhir-jpaserver-starter

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abstracta / jmeter-java-dsl

Simple JMeter performance tests API

CryptoMorin / XSeries

Library for cross-version Minecraft Bukkit support and various efficient API methods.

twilio / twilio-java

A Java library for communicating with the Twilio REST API and generating TwiML.

geonetwork / core-geonetwork

GeoNetwork is a catalog application to manage spatially referenced resources. It provides powerful metadata editing and search functions as well as an interactive web map viewer. It is currently used in numerous Spatial Data Infrastructure initiatives across the world.

wimdeblauwe / error-handling-spring-boot-starter

Spring Boot starter for configurable REST API error handling

jOOQ / jOOX

jOOX - The Power of jQuery Applied to W3C DOM Like JDBC, DOM is a powerful, yet very verbose low-level API to manipulate XML. The HTML DOM an be manipulated with the popular jQuery product, in JavaScript. Why don't we have jQuery in Java? jOOX is jQuery's XML parts, applied to Java.

Teddy563 / realworldmc

Explore real cities, mountains and streets in Minecraft. RealWorldMC brings Google 3D maps and Street View to Java Edition with Fabric. Recommended for 1.21.1; experimental 26.2 available. Requires your own map API keys.

Eleven617 / mall-ai-after-sales-platform

Trusted e-commerce AI after-sales platform — RAG, controlled tools, human confirmation, Java-authoritative writes, and observable workflows.

cdmiltd / hivemind-simulator

DJI Dock 模拟器/调试器：模拟 DJI Dock 机场及配套飞行器的上云注册、设备上线、OSD/State 上报、航线任务、直播、媒体上传、HMS 告警等完整云端交互流程，对接巡飞平台（DJI Cloud API 后端）。比真机更快捷地验证平台代码正确性，提供 Spring Boot 后端 + Vue 前端 + Tauri 桌面端一体化调试工具。

Dhangofa / NetToggle

NetToggle brings advanced cellular network controls to Android Quick Settings. Switch between 5G Only (SA/NR), 4G/LTE Only, Preferred 5G, Preferred 4G, Preferred 3G, and 2G Only. Build custom tile cycles, target one or both SIMs, create shortcuts, use secure broadcast automation, restore preferred modes, and diagnose failures using Root or Shizuku.

stoopid-computers / funchole

Open-source platform for deploying and running functions behind your own Infra.

wlmosv-png / TGAutoSign

TGAutoSign - Telegram 每日自动签到（/jmb 管理 · 回调按钮/多指令/全账号 · 官方与第三方客户端 · libxposed API 102）

spring-ai-community / spring-ai-typesafe

A Java SDK for the TypeSafe AI JEV API, & Spring AI TypeSafe integrations.

SrJayYT / CosmosAPI

CosmosAPI un plugin de cosmos para spigot 1.21

Halcyonsong / liteagent-template

一个面向 AI Agent 与 LLM 集成的轻量级 Java 框架，提供统一抽象、OpenAI 兼容对话支持，以及流式响应、工具调用、记忆窗口和 Agent 编排的模块化结构。

1zzzzzlll / douyim

抖仙人：抖音 Android 纯净播放、内容过滤与无水印下载 LSPosed Modern API 102 模块

KirstenAli / nitromap

A zero-dependency embedded Java record store that adds asynchronous persistence, SQL-like querying, and shared-nothing clustering to the familiar ConcurrentHashMap API.

camilesing / DataPoly

An data service platform that turns SQL or Groovy scripts into RESTful APIs and MCP tools, with many data sources and built-in auth, rate limiting, firewall, and version rollback.数据服务平台：把 SQL / Groovy 脚本一键发布为 RESTful API 或 MCP 工具，支持多种数据源，内置鉴权、限流、防火墙与版本回滚。

Hydrooxzgen / NetherBridge

NetherBridge is a lightweight, high-performance mod loader for Minecraft Java Edition. Built on a modern mixin architecture, it provides seamless mod compatibility, rapid startup, and a stable bridge between vanilla gameplay and advanced modification.

YeamimHossainSajid / uber-doma-architecture

An enterprise blueprint for Uber's DOMA in Spring Boot. Eliminates microservice sprawl and internal network latency using tiered API gateways, gRPC, and isolated databases

hao1196561270 / MiFitnessAdAway

小米运动健康 / Mi Fitness（com.mi.health · com.xiaomi.wearable）去广告 LSPosed 模块：按页面清除推广卡与弹窗，内置 16 开关设置页，libxposed API 102

sjtt2 / HeyBox-LiquidGlass

为小黑盒 App 打造的液态玻璃底部导航栏 · LSPosed 模块（libxposed API 102）｜ Real-time SDF refraction & dispersion glass tab bar for HeyBox, powered by libxposed API 102

Leon-kennedy-god / cat-apk

喵喵助手 MeowMeowAssistant：QQMiaoAssistant 的功能扩张通用版。基于 Android 无障碍服务，将 QQ 专属文本改写（自定义替换规则/断句追加/随机颜文字）扩张为任意聊天软件（QQ/微信/Telegram/WhatsApp/钉钉/Discord/飞书/Slack 等）输入框内生效。含目标应用白名单/黑名单、输入法与密码框保护、发送兜底；纯原生 API 零依赖；AGPL-3.0；上游 QiCaiJie114514/QQMiaoAssistant 二次开发衍生。下载：https://github.com/Leon-kennedy-god/cat-apk/releases/latest

getwelink / weLink

微信 API、微信协议（iPad/Mac），支持消息收发、群聊、朋友圈和通讯录。提供 Python / Node.js / Go / Java SDK，免费试用，长期维护。

openlakestream / ursa

Ursa: a storage engine that implements Lakestream, an open API and specification for stream storage on object storage.

Aaqibhafeezkhan / Books-API

Spring Boot REST API for searching and discovering books using the Open Library API, with filtering, pagination, and interactive API documentation.

ironwood-lang / ironwood

Ironwood is an ahead-of-time compiled, object-oriented language for high-performance native applications. It preserves the familiar Java syntax, object model, and everyday APIs that Java developers already know, while producing optimized native executables with no JVM, JIT, or garbage collector.

networknt / light-4j

A fast, lightweight and more productive microservices framework