Maven

Kolobokeleventov/Koloboke

A high-performance Java Collections Framework extension with primitive specializations and drop-in replacements for JDK collections.

zerocodeauthorjapps/zerocode

A no-code automated testing framework for microservices APIs, Kafka data streams, databases, and load testing using JSON/YAML.

Apache/Usergridapache/usergrid

A multi-tenant Backend-as-a-Service (BaaS) stack for web and mobile apps with RESTful APIs.

blazegraphblazegraph/database

An ultra high-performance graph database supporting Blueprints and RDF/SPARQL APIs, scaling to 50 billion edges on a single machine.

storm-crawlerDigitalPebble/storm-crawler

A scalable, mature, and versatile web crawler built on Apache Storm for building low-latency, distributed crawling systems.

AWS CloudWatch exporterprometheus/cloudwatch_exporter

A Prometheus exporter that fetches metrics from Amazon CloudWatch and exposes them for monitoring.

Vireotwitter/vireo

A lightweight, versatile C++11 video processing library with a unified interface for transcoding, remuxing, trimming, and more.

DataSketchesDataSketches/sketches-core

A Java library of stochastic streaming algorithms (sketches) for approximate analysis of massive datasets.

RestExpressRestExpress/RestExpress

A minimalist Java framework for rapidly creating scalable, containerless RESTful microservices using Netty.

ownerlviggiano/owner

A Java API that eliminates boilerplate code for handling configuration properties files.

Record-BuilderRandgalt/record-builder

An annotation processor that generates builders, withers, and records for Java records and interfaces.

Polyglot for Maventakari/polyglot-maven

Write Apache Maven POM files in Ruby, Groovy, Scala, YAML, Kotlin, Clojure, Java, or Atom instead of XML.

BIDMachBIDData/BIDMach

A CPU and GPU-accelerated machine learning library optimized for high-performance computing.

MariaDB4jMariaDB4j/MariaDB4j

A Java library that embeds MariaDB (MySQL-compatible) as a JAR, enabling database usage without external installation.

fastexceldhatim/fastexcel

A high-performance Java library for generating and reading large Excel files with minimal memory usage.

lmdbjavalmdbjava/lmdbjava

A Java binding for LMDB providing a low-latency, transactional, sorted, embedded key-value store with an idiomatic Java API.

Takesyegor256/takes

A true object-oriented and immutable Java web framework that eliminates NULLs, static methods, annotations, and mutable objects.

OpenAMOpenIdentityPlatform/OpenAM

Open-source access management solution for identity authentication, authorization, and federation with single sign-on and centralized policy control.

Apache Metron (incubating)apache/incubator-metron

A centralized platform for security monitoring and analysis, integrating big data technologies for log aggregation, threat detection, and behavioral analytics.

EasyMockeasymock/easymock

A Java library for creating mock objects to simplify unit testing.

Spatialneo4j-contrib/spatial

A Neo4j library for importing, storing, and querying spatial data with support for multiple geometry types and spatial indexes.

Vert.x blueprint - Microservice applicationsczyh30/vertx-blueprint-microservice

A blueprint for building reactive microservice applications using Vert.x, featuring a micro-shop example.

cactoosyegor256/cactoos

A collection of object-oriented Java primitives as an alternative to procedural libraries like Guava and Apache Commons.

JustWeEnginelfkdsk/JustWeEngine

An easy-to-use open source Android native game framework for building 2D games.

ImageJimagej/ImageJ

Public domain Java software for processing and analyzing scientific images across multiple platforms.

Serenity BDDserenity-bdd/serenity-core

A Java library for writing cleaner automated acceptance tests with rich living documentation and integration with Selenium, Playwright, and BDD tools.

jFairyDevskiller/jfairy

A Java library for generating realistic fake data like persons, companies, and emails with locale support.

Apache StreamPipesapache/incubator-streampipes

A self-service IoT toolbox enabling non-technical users to connect, analyze, and explore industrial IoT data streams.

Jade4Jneuland/jade4j

A Java implementation of the Pug template engine that processes templates without requiring JavaScript.

Spring for Android - Rest Templatespring-projects/spring-android

A library providing Spring's RestTemplate and authentication support for building REST clients in native Android applications.

Apk2Goldlxdvs/apk2gold

A CLI tool that decompiles Android APKs into readable Java source with reconstructed R.* references.

barefootbmwcarit/barefoot

A Java library for state-of-the-art online and offline map matching using OpenStreetMap, designed for scalable location-based services.

jammjbellis/jamm

A Java agent and library for measuring actual object memory usage, including JVM overhead, across multiple Java versions.

GeoFire for Javafirebase/geofire-java

A Java library for storing and querying geographic locations in realtime using Firebase.

amazon-kinesis-clientawslabs/amazon-kinesis-client

A Java client library for building scalable, fault-tolerant applications that consume and process data from Amazon Kinesis Data Streams.

dtd-finderGoSecure/dtd-finder

A security tool that identifies DTDs in filesystem snapshots and generates XXE payloads using those local DTDs.