Design patterns implemented in Java

All Algorithms implemented in Java

Free universal database tool and SQL client

QuestDB is a high performance, open-source, time-series database

The official home of the Presto distributed SQL query engine for big data

Apache Doris is an easy-to-use, high performance and unified analytics database.

Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.

Git Server with CI/CD, Kanban, and Packages. Seamless integration. Unparalleled experience.

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

Style and Grammar Checker for 25+ Languages

Apache DolphinScheduler is the modern data orchestration platform. Agile to create high performance workflow with low-code

Apache Druid: a high performance real-time analytics database.

🔎 Open source distributed and RESTful search engine.

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

VasSonic is a lightweight and high-performance Hybrid framework developed by tencent VAS team, which is intended to speed up the first screen of websites working on Android and iOS platform.

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 …

Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS

Distributed and fault-tolerant realtime computation: stream processing, continuous computation, distributed RPC, and more

👑 LeetCode of algorithms with java solution(updating).

Free and open log management

Enso Analytics is a self-service data prep and analysis platform designed for data teams.

GoCD - Continuous Delivery server main repository

Alluxio, data orchestration for analytics and machine learning in the cloud

AI + Data, online. https://vespa.ai

Haven is for people who need a way to protect their personal spaces and possessions without compromising their own privacy, through an Android app and on-device sensors

Apache Pinot - A realtime distributed OLAP datastore

Open-Source Subscription Billing & Payments Platform

Shopizer java e-commerce software

Micro second messaging that stores everything to disk

Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with…