elastic / elasticsearch

Free and Open Source, Distributed, RESTful Search Engine

VictorTran1023 / tcl-tv-adb-proxy

TCL 电视调试与优化手册：ADB 授权 · 侧载 · 代理 · 去广告 · 低负载 · HUD · 回归测试

doocs / advanced-java

😮 Core Interview Questions & Answers For Experienced Java(Backend) Developers | 互联网 Java 工程师进阶知识完全扫盲：涵盖高并发、分布式、高可用、微服务、海量数据处理等领域知识

alibaba / arthas

Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas

YunaiV / yudao-cloud

ruoyi-vue-pro 全新 Cloud 版本，优化重构所有功能。基于 Spring Cloud Alibaba + MyBatis Plus + Vue & Element 实现的后台管理系统 + 用户小程序，支持 RBAC 动态权限、多租户、数据权限、工作流、三方登录、支付、短信、商城、CRM、ERP、MES、IM、AI 大模型、IoT 物联网等功能。你的 ⭐️ Star ⭐️，是作者生发的动力！

APIJSON / APIJSON

🏆 Real-Time no-code, powerful and secure ORM 🚀 providing APIs and Docs without coding by Backend, and Frontend(Client) can customize response JSONs 🏆 实时 零代码、全功能、强安全 ORM 库 🚀 后端接口和文档零代码，前端(客户端) 定制返回 JSON 的数据和结构

elastic / logstash

Logstash - transport and process your logs, events, or other data

StarRocks / starrocks

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance for multi-dimensional analytics, real-time analytics, and ad-hoc queries. A Linux Foundation project.

apache / shardingsphere-elasticjob

Distributed scheduled job

NLPchina / elasticsearch-sql

Use SQL to query Elasticsearch

ikarus23 / MifareClassicTool

An Android NFC app for reading, writing, analyzing, etc. MIFARE Classic RFID tags.

haifengl / smile

Statistical Machine Intelligence & Learning Engine

gsantner / markor

Text editor - Notes & ToDo (for Android) - Markdown, todo.txt, plaintext, math, ..

JSQLParser / JSqlParser

JSqlParser parses an SQL statement and translate it into a hierarchy of Java classes. The generated hierarchy can be navigated using the Visitor Pattern

jindrapetrik / jpexs-decompiler

JPEXS Free Flash Decompiler (FFDec) is open-source Flash SWF decompiler and editor. Extract and edit ActionScript, images, sounds, shapes, fonts, and other SWF resources.

JanusGraph / janusgraph

JanusGraph: an open-source, distributed graph database

redis / lettuce

Redis Java client

zfdang / Android-Touch-Helper

AdSkip — an Android assistant for automatically skipping app launch ads

JodaOrg / joda-time

Joda-Time is the widely used replacement for the Java date and time classes prior to Java SE 8.

crate / crate

CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.

RoaringBitmap / RoaringBitmap

A better compressed bitset in Java: used by Apache Spark, Netflix Atlas, Apache Pinot, Tablesaw, and many others

Atmosphere / atmosphere

Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI.

komoot / photon

an open source geocoder for openstreetmap data

classgraph / classgraph

An uber-fast parallelized Java classpath scanner and module scanner.

spring-projects / spring-data-elasticsearch

Provide support to increase developer productivity in Java when using Elasticsearch. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.

jOOQ / jOOR

jOOR - Fluent Reflection in Java jOOR is a very simple fluent API that gives access to your Java Class structures in a more intuitive way. The JDK's reflection APIs are hard and verbose to use. Other languages have much simpler constructs to access type meta information at runtime. Let us make Java reflection better.

HotswapProjects / HotswapAgent

Java unlimited redefinition of classes at runtime.

risesoft-y9 / Digital-Infrastructure

数字底座是一款面向大型政府、企业数字化转型，基于身份认证、组织架构、岗位职务、应用系统、资源角色、数据目录、安全控制等功能构建的统一且安全的管理支撑平台。数字底座基于三员管理模式，具备微服务、多租户、容器化和国产化，支持用户利用代码生成器快速构建自己的业务应用，同时可关联诸多成熟且好用的内部生态应用。

apache / atlas

Apache Atlas - Open Metadata Management and Governance capabilities across the Hadoop platform and beyond

elastic / elasticsearch-hadoop

:elephant: Elasticsearch real-time search and analytics natively integrated with Hadoop

javahongxi / whatsmars

Java生态研究(Spring Boot + Redis + Dubbo + RocketMQ + Elasticsearch)🔥🔥🔥🔥🔥

spring-projects / spring-data-redis

Provides support to increase developer productivity in Java when using Redis, a key-value store. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.

stacksimplify / aws-eks-kubernetes-masterclass

AWS EKS Kubernetes - Masterclass | DevOps, Microservices

polardb / polardbx-sql

PolarDB-X is a cloud native distributed SQL Database designed for high concurrency, massive storage, complex querying scenarios.

spring-projects / spring-data-mongodb

Provides support to increase developer productivity in Java when using MongoDB. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.

sofastack / sofa-ark

SOFAArk is a light-weight，java based classloader isolation framework.

JonathanLink / PDFLayoutTextStripper

Converts a pdf file into a text file while keeping the layout of the original pdf. Useful to extract the content from a table in a pdf file for instance. This is a subclass of PDFTextStripper class (from the Apache PDFBox library).

ebean-orm / ebean

Ebean ORM

dadoonet / fscrawler

Elasticsearch File System Crawler (FS Crawler)

hantsy / spring-reactive-sample

Spring Reactive playground

MCreator / MCreator

MCreator is an open-source software used to make Minecraft Java Edition mods, Minecraft Bedrock Edition Add-Ons, resource packs, and data packs using an intuitive easy-to-learn interface or with an integrated code editor. It is used worldwide by Minecraft players, aspiring mod developers, for education, online classes, and STEM workshops.

java-up-up / damai

🔥 🔥 官方推荐 🔥 🔥 高并发大麦网售票系统，使用 SpringCloud、Kafka、Redis、Sentinel、ElasticSearch、ShardingSphere 等，通过优化锁的策略、多级缓存管理、数据提前预热、精确的定制限流等多种策略，显著的降低下单延迟。此外还解决各种高并发难题的实际落地解决方案。是面试、就业、提高技术的不二选择！

codelibs / fess

Open-source, self-hosted enterprise & site search server built on OpenSearch. Crawls web / file / DB / cloud sources, 20+ languages, REST API, and AI/RAG & semantic search. Apache-2.0.

apache / celeborn

Apache Celeborn is an elastic and high-performance service for shuffle and spilled data.

devlive-community / metaforge

DataCap is integrated software for data transformation, integration, and visualization. Support a variety of data sources, file types, big data related database, relational database, NoSQL database, etc. Through the software can realize the management of multiple data sources, the data under the source of various operations conversion ...

86dbs / dbsyncer

DBSyncer（简称dbs）是一款开源的数据同步中间件，提供MySQL、Oracle、SqlServer、PostgreSQL、Elasticsearch(ES)、Kafka、File、SQL等同步场景。支持上传插件自定义同步转换业务，提供监控全量和增量数据统计图、应用性能预警等。

jumpmindinc / symmetric-ds

SymmetricDS is database replication and file synchronization software that is platform independent, web enabled, and database agnostic. It is designed to make bi-directional data replication fast, easy, and resilient. It scales to a large number of nodes and works in near real-time across WAN and LAN networks.

risesoft-y9 / WorkFlow-Engine

工作流引擎对内提供单位/机关流程管理规则和内部业务流程的数字化落地实践；对外提供自动化地第三方业务驱动、接口接入和算法单元驱动能力。工作流引擎在提供底层驱动引擎的同时对全局透明监控、安全防御和国产化特色功能进行充分考虑，是内部流程管理和业务算法驱动的不二之选。

spring-projects / spring-data-neo4j

Provide support to increase developer productivity in Java when using Neo4j. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.

ICIJ / datashare

A self‑hosted search engine for documents

spring-cloud / spring-cloud-commons

Common classes used in different Spring Cloud implementations

odnoklassniki / one-nio

Unconventional I/O library for Java

naver / fixture-monkey

Let Fixture Monkey generates fully-customizable, randomly populated instance. Focus on the properties of the class that really matter in your test.

ViaVersion / ViaFabricPlus

Minecraft Fabric mod that allows you to join every Minecraft server version (Classic, Alpha, Beta, Release, April Fools, Bedrock)

KouShenhai / KCloud-Platform-IoT

KCloud-Platform-IoT（老寇IoT云平台）是一个企业级单体架构和微服务架构的IoT云平台。采用DDD(领域驱动设计)思想，基于Spring Boot 4.1.1、Spring Cloud 2025.1.3、Spring Cloud Alibaba 2025.1.0.0 最新版本开发的云服务多租户IoT平台，家人们，点个star！拜托啦~

Waikato / moa

MOA is an open source framework for Big Data stream mining. It includes a collection of machine learning algorithms (classification, regression, clustering, outlier detection, concept drift detection and recommender systems) and tools for evaluation.

ViaVersion / ViaProxy

Standalone proxy which allows players to join EVERY Minecraft server version (Classic, Alpha, Beta, Release, Bedrock)

Jarrettluo / all-docs

"All Docs" is a tool that enables online previewing, storage, and sharing of documents such as Word, Excel, PowerPoint, PDF, and images (Pic). It supports full-text search for all document information. “全文档”(All Docs)，Word, Excel, PPT, PDF, Pic等文档在线预览、存储、共享的工具，并且支持全文搜索的所有的文档信息。demo账号密码：admin123

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

TeamGalacticraft / Galacticraft

The classic space mod, rewritten for modern versions of Minecraft.