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25 stars written in Java
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Demonstrate all the questions on LeetCode in the form of animation.(用动画的形式呈现解LeetCode题目的思路)

Java 76,658 13,946 Updated Aug 14, 2023

Free and Open Source, Distributed, RESTful Search Engine

Java 76,541 25,854 Updated Apr 19, 2026

Everything you need to know to get the job.

Java 64,925 12,910 Updated May 12, 2025

Google core libraries for Java

Java 51,506 11,149 Updated Apr 17, 2026

Free universal database tool and SQL client

Java 49,648 4,118 Updated Apr 18, 2026

A browser automation framework and ecosystem.

Java 34,082 8,673 Updated Apr 19, 2026

A Java serialization/deserialization library to convert Java Objects into JSON and back

Java 24,241 4,426 Updated Apr 17, 2026

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

Java 18,830 3,431 Updated Feb 16, 2026

Zipkin is a distributed tracing system

Java 17,431 3,103 Updated Apr 8, 2026

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

Java 14,878 949 Updated Apr 17, 2026

CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.

Java 10,068 2,718 Updated Apr 11, 2026

Spinnaker is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence.

Java 9,710 1,263 Updated Apr 19, 2026

Apache Iceberg

Java 8,751 3,173 Updated Apr 19, 2026

GoCD - Continuous Delivery server main repository

Java 7,388 979 Updated Apr 18, 2026

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

Java 7,185 2,942 Updated Apr 29, 2025

JanusGraph: an open-source, distributed graph database

Java 5,767 1,208 Updated Nov 21, 2025

Generates a unified GraphQL schema from gRPC microservices and other Protobuf sources

Java 3,664 135 Updated Jun 13, 2023

Anthelion is a plugin for Apache Nutch to crawl semantic annotations within HTML pages.

Java 2,840 659 Updated Dec 17, 2015

EventMesh is a new generation serverless event middleware for building distributed event-driven applications.

Java 1,725 649 Updated Apr 2, 2026

OpenTracing API for Java. 🛑 This library is DEPRECATED! https://github.com/opentracing/specification/issues/163

Java 1,684 339 Updated Oct 11, 2021

faked out in-memory mongo for java

Java 527 153 Updated Nov 9, 2020

Hiero Mirror Node archives data from consensus nodes and serves it via an API

Java 183 143 Updated Apr 19, 2026

A simple wrapper for Android's Spinner in react-native

Java 59 22 Updated Oct 26, 2016

OpenTracing Instrumentation for gRPC

Java 58 23 Updated Jul 5, 2023

NBN HFC Monitor (hfcmon)

Java 27 4 Updated Dec 6, 2020