Repository Index

OpenGrok is a fast and usable source code search and cross reference engine, written in Java

• opengrok
• java
• source
• code

OrientDB is the most versatile DBMS supporting Graph, Document, Reactive, Full-Text and Geospatial models in one Multi-Model product. OrientDB can run distributed (Multi-Master), supports SQL, ACID Transactions, Full-Text indexing and Reactive Queries.

• orientdb
• graph-database
• document-database
• dbms

Kodezi Chronos is a debugging-first language model that achieves state-of-the-art results on SWE-bench Lite (80.33%) and 67% real-world fix accuracy, over six times better than GPT-4. Built with Adaptive Graph-Guided Retrieval and Persistent Debug Memory. Model available Q1 2026 via Kodezi OS.

• artificial-intelligence
• benchmark
• benchmark-report
• bug-fixing

Implementation of Instagram with Material Design (originally based on Emmanuel Pacamalan's concept)

Desktop app for managing BibTeX and BibLaTeX (.bib) libraries

• jabref
• bibtex
• java
• latex

Free implementation of Play Services

A reference implementation of a JSON package in Java.

• hacktoberfest
• java
• json
• public-domain

Active record style SQLite persistence for Android

Ribbon is a Inter Process Communication (remote procedure calls) library with built in software load balancers. The primary usage model involves REST calls with various serialization scheme support.

A blazingly fast multi-language serialization framework for idiomatic domain objects, schema IDL, and cross-language data exchange.

• cross-language
• fast
• jit
• multiple-language

Fault tolerance and resilience patterns for the JVM

• java
• retry
• resilience
• timeout

The official AWS SDK for Java 1.x (In Maintenance Mode, End-of-Life on 12/31/2025). The AWS SDK for Java 2.x is available here: https://github.com/aws/aws-sdk-java-v2/

• aws-sdk
• java
• aws
• amazon

Distributed Peer-to-Peer Web Search Engine and Intranet Search Appliance

• decentralized
• p2p
• p2p-network
• privacy

Micro second messaging that stores everything to disk

• chronicle
• queue
• java
• performance

Java dataframe and visualization library

• dataframe
• data-frame
• java
• java-dataframe

Simple Binary Encoding (SBE) - High Performance Message Codec

• codec
• java
• c-plus-plus
• golang

Apache Linkis builds a computation middleware layer to facilitate connection, governance and orchestration between the upper applications and the underlying data engines.

• sql
• spark
• hive
• pyspark

World's most powerful open data catalog for building a high-performance, geo-distributed and federated metadata lake.

• datalake
• lakehouse
• metadata
• federated-query

DataSphereStudio is a one stop data application development& management portal, covering scenarios including data exchange, desensitization/cleansing, analysis/mining, quality measurement, visualization, and task scheduling.

• workflow
• governance
• azkaban
• davinci

High Performance data structures and utility methods for Java

• java
• performance

A graph database that supports more than 100+ billion data, high performance and scalability (Include OLTP Engine & REST-API & Backends)

• database
• graph-database
• graph
• gremlin

requery - modern SQL based query & persistence for Java / Kotlin / Android

• sql
• persistence
• java
• kotlin

JavaMelody : monitoring of JavaEE applications

• performance
• monitoring
• metrics
• apm

Replicate your Key Value Store across your network, with consistency, persistance and performance.