OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

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

Style and Grammar Checker for 25+ Languages

Java JWT: JSON Web Token for Java and Android

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

Open source routing engine for OpenStreetMap. Use it as Java library or standalone web server.

configuration library for JVM languages using HOCON files

JanusGraph: an open-source, distributed graph database

General IM UI components. Android/iOS/RectNative ready. 通用 IM 聊天 UI 组件，已经同时支持 Android/iOS/RN。

CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.

The Apache Tika toolkit detects and extracts metadata and text from over a thousand different file types (such as PPT, XLS, and PDF).

Runnable code for solving Project Euler problems in Java, Python, Mathematica, Haskell.

Broadleaf Commerce CE - an eCommerce framework based on Java and Spring

Plugin to integrate Learning to Rank (aka machine learning for better relevance) with Elasticsearch

Jlama is a modern LLM inference engine for Java

Anserini is a Lucene toolkit for reproducible information retrieval research

Diablo II remade using Java and LibGDX

Library of different Bloom filters in Java with optional Redis-backing, counting and many hashing options.

Compact in-memory representation of directed graph data

The Amazon DynamoDB Storage Backend for JanusGraph

ONgDB is an independent fork of Neo4j® Enterprise Edition version 3.4.0.rc02 licensed under AGPLv3 and/or Community Edition licensed under GPLv3

💬 Open Source App Framework to build streaming apps with real-time data - 💎 Build real-time data pipelines and make real-time data universally accessible - 🤖 Join historical and real-time data in t…

A Natural Language Date Time Parser that Extract date and time from text with context and parse to the required format

A Java port of Daniel Lemire's fast_float project

JSON via StAX

"Fast as internal ring buffer" Logback/Log4J2 appender using SQLite with zstandard dictionary compression and rollover.

Java CRDT Library with a focus on supporting Riak.

Aerospike storage backend for Janusgraph

This is a generic Android HFP Client user application, including ringing notification. It is based on Qualcomm hfptestclient. This one is buildable as a regular application through some heavy use o…

Elastic-Grok-Script-Plugin is a provider of Grok ElasticSearch plug-in