Free universal database tool and SQL client
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Chat2DB is a free, cross-platform, local-first database client and SQL workspace for developers, DBAs, analysts, and data teams. Connect to 40+ databases, manage data, edit and run SQL, and use your own AI model to generate, explain, and optimize queries. Available on desktop, web, Docker, and CLI, with MCP support.
eladmin jpa 版本：项目基于 Spring Boot 2.7.18、 Jpa、 Spring Security、Redis、Vue的前后端分离的后台管理系统，项目采用分模块开发方式， 权限控制采用 RBAC，支持数据字典与数据权限管理，支持一键生成前后端代码，支持动态路由
- spring-boot
- spring-security
- jpa
- redis
基于Spring+SpringMVC+Mybatis分布式敏捷开发系统架构，提供整套公共微服务服务模块：集中权限管理（单点登录）、内容管理、支付中心、用户管理（支持第三方登录）、微信平台、存储系统、配置中心、日志分析、任务和通知等，支持服务治理、监控和追踪，努力为中小型企业打造全方位J2EE企业级开发解决方案。
- spring
- springmvc
- shiro
- spring-session
Apache Druid: a high performance real-time analytics database.
- druid
LangChain4j is an idiomatic, open-source Java library for building LLM-powered applications on the JVM. It offers a unified API over popular LLM providers and vector stores, and makes implementing tool calling (including MCP support), agents and RAG easy. It integrates seamlessly with enterprise Java frameworks like Quarkus and Spring Boot.
jOOQ is the best way to write SQL in Java
- jooq
- java
- sql
- jpa
Main Liquibase Source
- java
- liquibase
- database-migrations
- java-library
Apache Linkis builds a computation middleware layer to facilitate connection, governance and orchestration between the upper applications and the underlying data engines.
Database Subsetting and Relational Data Browsing Tool.
An easy-to-use BI server built for SQL lovers. Power data analysis in SQL and gain faster business insights.
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.
- java
- elasticsearch
- full-text-search
- lucene
The ultimate distributed MQTT broker. Handles 100M+ connections and 10M msg/sec with ease. Built on Kafka to provide industrial-grade persistence and eliminate data loss.
Shell for issuing SQL to relational databases via JDBC
Multitenant backend server for building web and mobile apps rapidly. The backend for busy developers. (self-hosted or hosted)
- backend
- api-server
- json-api
- baas
The database purpose-built for stream processing applications.
- stream-processing
- real-time
- sql
- interactive
Admin interface for MongoDB built using Django and Bootstrap. Features a JSON editor written in JavaScript that supports nested JSON objects.
A Java DSL (Builder) for the Cypher Query Language
ASH Viewer provides a graphical view of active session history data within the Oracle and PostgreSQL DB
Flexible search query builder is SAP Hybris Commerce extension (released as a library) that provides developer-friendly way to build flexible search queries. The aim of this extension is to write().flexibleSearchQueries().easily() in compile-time safe manner without a need to remember the syntax.
- hybris-commerce-suite
- hybris
- hybris-commerce
- hybris-extension
A highly scalable redis-persistent queuing system for vertx
Vertx-MongoDB-Effect enables interaction with MongoDB in a purely functional and reactive style, seamlessly integrating with Vertx-effect. This library requires familiarity with Vertx-effect, as both frameworks share a foundational reliance on immutability and persistent data structures provided by json-values.
- functional-programming
- javascript
- json-values
- mongodb