Free universal database tool and SQL client
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RxJava – Reactive Extensions for the JVM – a library for composing asynchronous and event-based programs using observable sequences for the Java VM.
- java
- rxjava
- flow
- reactive-streams
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.
Empowering Data Intelligence with Distributed SQL for Sharding, Scalability, and Security Across All Databases.
Implementation of ImageView for Android that supports zooming, by various touch gestures.
Translated🏆 Real-Time no-code, powerful and secure ORM 🚀 providing APIs and Docs without coding by Backend, and Frontend(Client) can customize response JSONs
Translated👶🏻 Encyclopedia of major knowledge & technical interviews for junior developers 📖
- interview
- developer
- tech
- computer-science
QuestDB is a high performance, open-source, time-series database
- time-series
- low-latency
- database
- sql
Graphs for Everyone
TranslatedBig Data Beginner's Guide :star:
- hadoop
- hdfs
- yarn
- mapreduce
Apache Doris is a real-time analytics and hybrid search database for AI agents.
- olap
- database
- hudi
- iceberg
Open source alternative to Auth0 / Firebase Auth / AWS Cognito
- authentication
- session-management
- login
- supertokens
Free implementation of Play Services
- java
- android
- microg
- google-cloud-messaging
Translatedflink learning blog. http://www.54tianzhisheng.cn/ Covers Flink introduction, concepts, principles, hands-on practice, performance tuning, source code analysis, and more. Includes learning examples involving Flink Connector, Metrics, Library, DataStream API, Table API & SQL, and also shares large-scale project cases of Flink in production (PV/UV, log storage, real-time deduplication of 10 billion records, monitoring and alerting). You are welcome to support my column 《大数据实时计算引擎 Flink 实战与性能优化》 ("Big Data Real-Time Computing Engine Flink: Hands-On Practice and Performance Optimization")
Universal File Online Preview Project based on Spring-Boot
- fileview
- kkfileview
- office-view
- fileviewer
Suite of tools for deploying and training deep learning models using the JVM. Highlights include model import for keras, tensorflow, and onnx/pytorch, a modular and tiny c++ library for running math code and a java based math library on top of the core c++ library. Also includes samediff: a pytorch/tensorflow like library for running deep learn...
- java
- gpu
- deeplearning
- neural-nets
Apache Druid: a high performance real-time analytics database.
- druid
Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)
- java
- presto
- hive
- hadoop
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.
Change data capture for a variety of databases. Please log issues at https://github.com/debezium/dbz/issues.
- change-data-capture
- kafka-connect
- apache-kafka
- debezium
Apache ZooKeeper
- zookeeper
- database
- hacktoberfest
- java
greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.
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.
The Java gRPC implementation. HTTP/2 based RPC
- grpc
- java
- microservices
- proto