A socket server (include SSL) supports realtime application, realtime game, MMORPG, messaging, chat and streaming data with TCP, UDP and Websocket
A relational database with SQL support built on FoundationDB
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.
A cluster consistency platform
Tapdata Live Data Platform Project
Universal HTAP Engine
🔥🔥🔥可视化拖拽式大数据集成平台、大数据平台、大数据,包含数据流、数据源、数据对齐、查询模板、智能问数、AI集成、完善的监控等。像画流程图一样且无代码方式同步、清洗数据。
a online Marketplace for coffee retail (Backend)
Extension for Jackson JSON processor that adds support for serializing POJOs as XML (and deserializing from XML) as an alternative to JSON
:book::microscope::coffee: BioJava is an open-source project dedicated to providing a Java library for processing biological data.
REST version of the Spring Petclinic sample application
A quality control analysis tool for high throughput sequencing data
🔥🔥🔥 Turn AI-written code into real apps. Nubase is an open-source, AI-native backend platform for AI Coding, agentic applications, and modern product teams: Memory, Database, Storage, and Auth in one self-hostable service.
AllTick real-time financial market data API with REST and WebSocket access to stocks, forex, crypto, commodities, and indices.
Firebase Admin Java SDK
ORCID Open Source Project
The Amazon Athena Query Federation SDK allows you to customize Amazon Athena with your own data sources and code.
Eclipse Kura™ is a versatile framework to supercharge your edge devices, streamlining the process of configuring your gateway, connecting sensors, and IoT devices to seamlessly collect, process, and send data to the cloud.
Spring Boot/JPA microservices that use an orchestration-based saga to maintain data consistency
Simple Java connector to Binance Spot API
OpenLegislation is a web service that delivers legislative information from the New York State Senate and Assembly to the public in near-real time. It is used internally to serve up legislative data for nysenate.gov and the Bluebird-CRM.
Eclipse BIRT™ The open source reporting and data visualization project.
QuickPerf is a testing library for Java to quickly evaluate and improve some performance-related properties
Spring Data JPA extension allowing full dynamic usage of EntityGraph on repositories
⚡️ Firebase plugins for Capacitor. Supports Android, iOS and the Web.
GeoWave provides geospatial and temporal indexing on top of Accumulo, HBase, BigTable, Cassandra, Kudu, Redis, RocksDB, and DynamoDB.
A Java 11 port of Facebook DataLoader
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.
Apache Tez
DAO oriented database mapping framework for Java
Mirror of Apache Helix
ReplicaDB is open source tool for database replication, designed for efficiently transferring bulk data between relational and non-relational databases
Mini decentralised auth. Gives an existing auth system a key nobody holds, with governance over who can decrypt.
Open-source data operations platform for data integration, workflow automation, data quality, and governance.
Emporia is a microservices-based trading platform built with Spring Boot, React and PostgreSQL, featuring real-time market data, order management, execution strategies, and OAuth2 security.
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。
Jync 捷同 - 极简、极速的异构数据库实时同步工具。单 JAR 部署,无需 Kafka/Zookeeper,零外部依赖。支持 MySQL、Oracle、PostgreSQL 及众多信创数据库。内置 DDL 自动同步、幂等 upsert、断点续传,内网离线可用。沐编程 (QQMu) 出品 | 官网: https://jync.qqmu.com
⚡ Ultra-Low Latency Continuous Double Auction Matching Engine in Java 21 Loom. In-memory L2 market depth, price-time priority, STOMP WebSockets, 50k+ ops/sec.
⚡ In-Memory Vector Search Engine & HNSW ANN Graph in Java 21 Loom. Sub-millisecond KNN retrieval, 8-bit scalar quantization (SQ8), 16,000+ QPS.
🇮🇳 High-Performance Geospatial Administrative Hierarchy & Proximity Query Engine for India's 650k+ Census Settlements (Java 21 Loom, 2D KD-Tree, 38k+ QPS).
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
The database agent for Postgres and MySQL - Point it at PostgreSQL or MySQL and ask questions in plain English — schema exploration, query generation, slow query analysis, index recommendations, generated dashboards. Self-hosted and air-gapped.
百目 JArgus · Java 代码评审平台 | Hundred-eyed Java code review — 百目所视,无所遁形
A persistent native vector-hypergraph database for higher-order interactions
Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
zerocode-tdd is a community-developed, free, open-source, outcome-driven automated testing framework for Data Pipelines, ETL, REST API, Kafka(Data Streams), Databases and Load scenarios. all defined in simple JSON or YAML — with zero coding.
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.