Trending repositories

501.jboss-javassist / javassist

Java bytecode engineering toolkit

• java-bytecode
• java

502.VaughnVernon / IDDD_Samples

These are the sample Bounded Contexts from the book "Implementing Domain-Driven Design" by Vaughn Vernon: http://vaughnvernon.co/?page_id=168

503.bonigarcia / webdrivermanager

Automated driver management and other helper features for Selenium WebDriver in Java

• java
• selenium-webdriver
• chromedriver
• geckodriver
• maven
• selenium
• +2 more

504.flyingsaucerproject / flyingsaucer

XML/XHTML and CSS 2.1 renderer in pure Java

505.tabulapdf / tabula-java

Extract tables from PDF files

• extracting-tables
• pdfs
• extraction-engine

506.Netflix / hollow

Hollow is a java library and toolset for disseminating in-memory datasets from a single producer to many consumers for high performance read-only access.

507.nats-io / nats.java

Java client for NATS

• nats
• java
• client
• messaging
• messaging-library
• middleware

508.Ahoo-Wang / CosId

Universal, flexible, high-performance distributed ID generator. | 通用、灵活、高性能的分布式 ID 生成器

• distributed
• id
• idgenerator
• snowflake
• kubernetes
• k8s
• +14 more

509.xfl03 / MCCustomSkinLoader

Customize Skin, Cape and Elytra in Minecraft 1.8-1.21

• java
• minecraft
• fabric
• forge
• gradle
• minecraft-mod

510.magento / magento2-phpstorm-plugin

PHPStorm Plugin for Magento 2

• hacktoberfest
• phpstorm-plugin
• phpstorm
• java
• jetbrains
• intellij
• +6 more

511.tinystruct / tinystruct

A lightweight, modular Java application framework for web and CLI development, designed for AI integration and plugin-based architecture. Enabling developers to create robust solutions with ease for building efficient and scalable applications.

• java
• lightweight-framework
• modular-design
• tinystruct
• web-frameworks
• java-frameworks
• +14 more

512.dokimos-dev / dokimos

LLM and agent evaluation for Java & Kotlin. Runs in JUnit and CI. Spring AI, LangChain4j, Koog, Embabel, and any LLM client.

• agent-evaluation
• evaluation-framework
• evaluation-metrics
• java
• langchain4j
• llm-evaluation
• +14 more

513.Tencent / VasSonic

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.

• hybrid
• android-sdk
• ios-sdk
• h5
• web
• webview

514.google / j2objc

A Java to iOS Objective-C translation tool and runtime.

515.reactive-streams / reactive-streams-jvm

Reactive Streams Specification for the JVM

516.nisrulz / android-tips-tricks

:ballot_box_with_check: [Cheatsheet] Tips and tricks for Android Development

• android-development
• android-studio
• gradle
• cheatsheet
• tips
• tricks
• +8 more

517.linkedin / databus

Source-agnostic distributed change data capture system

518.jgrapht / jgrapht

Master repository for the JGraphT project

• graph-algorithms
• graph-theory
• data-structures
• datastructures
• graph-datastructures
• graph-api
• +7 more

519.vsch / flexmark-java

CommonMark/Markdown Java parser with source level AST. CommonMark 0.28, emulation of: pegdown, kramdown, markdown.pl, MultiMarkdown. With HTML to MD, MD to PDF, MD to DOCX conversion modules.

• commonmark
• pegdown
• java
• markdown-parser
• markdown-processor
• markdown-conversion
• +5 more

520.selenide / selenide

Concise UI Tests with Java!

521.logicalclocks / hopsworks

Hopsworks - Data-Intensive AI platform with a Feature Store

• feature-store
• aws
• azure
• data-science
• feature-engineering
• feature-management
• +11 more

522.libgdx / gdx-ai

Artificial Intelligence framework for games based on libGDX or not. Features: Steering Behaviors, Formation Motion, Pathfinding, Behavior Trees and Finite State Machines

• libgdx
• pathfinding
• steering-behaviors
• formation-motion
• behavior-trees
• java
• +7 more

523.OpenAPITools / openapi-diff

Utility for comparing two OpenAPI specifications.

• openapi
• openapi3
• swagger
• diff
• api
• openapi-specification
• +1 more

524.carrotsearch / hppc

High Performance Primitive Collections for Java

525.MobiVM / robovm

Ahead of time compiler for JVM bytecode targetting iOS, Mac OSX and Linux

• ios
• java
• jvm
• robovm
• kotlin
• linux
• +3 more

526.Randgalt / record-builder

Record builder generator for Java records

• java
• records
• enable-preview
• java-16
• java-17
• java-records

527.nitrite / nitrite-java

NoSQL embedded document store for Java

• nosql
• embedded-database
• documentdb
• android
• mobile-database
• database
• +2 more

528.GeyserMC / MCProtocolLib

A library for communication with a Minecraft client/server.

• minecraft
• java
• protocol
• library
• minecraft-protocol

529.littlehorse-enterprises / littlehorse

LittleHorse Server: Business-as-Code Platform for Microservices, Workflows, and Agents

• microservices
• workflow-engine
• orchestration
• apache-kafka
• event-driven-architecture
• kafka-streams
• +1 more

530.Farama-Foundation / MicroRTS

A simple and highly efficient RTS-game-inspired environment for reinforcement learning

531.openl-tablets / openl-tablets

OpenL Tablets Business Rules Management System

532.DemchaAV / GraphCompose

Declarative Java engine for structured documents. Automatic layout, pagination, reusable templates and themes. Render print-ready PDF, export editable PowerPoint, or generate semantic DOCX.

• document-generation
• java
• layout-engine
• pdf
• report-generation
• template-engine
• +14 more

533.crossoverJie / JCSprout

👨‍🎓 Java Core Sprout : basic, concurrent, algorithm

• java
• concurrent-programming
• algorithm
• basic-java
• netty
• jvm

534.hdodenhof / CircleImageView

A circular ImageView for Android

• android
• imageview
• widget

535.lipangit / JiaoZiVideoPlayerArchived

MediaPlayer exoplayer ijkplayer ffmpeg

• project

536.lecho / hellocharts-android

Charts library for Android compatible with API 8+, several chart types with scaling, scrolling and animations 📊

• chart
• android

537.JesusFreke / smaliArchived

smali/baksmali

538.aws / aws-sdk-java

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

539.bmelnychuk / AndroidTreeView

AndroidTreeView. TreeView implementation for android

540.voldemort / voldemort

An open source clone of Amazon's Dynamo.

541.apache / logging-flume

Apache Flume is a distributed, reliable, and available service for efficiently collecting, aggregating, and moving large amounts of log-like data

• flume
• java
• apache
• api
• jvm
• library

542.http-kit / http-kit

Simple, high-performance event-driven HTTP client+server for Clojure

• clojure
• async
• websockets
• http-server
• http-client

543.amaembo / streamex

Enhancing Java Stream API

• java
• java8
• collections
• streams-api

544.prometheus / client_java

Prometheus instrumentation library for JVM applications

• instrumentation
• java
• metrics
• prometheus

545.p6spy / p6spy

P6Spy is a framework that enables database data to be seamlessly intercepted and logged with no code changes to the application.

• p6spy
• java
• jdbc
• jdbc-logging
• logging

546.minio / minio-java

MinIO Client SDK for Java

• libraries
• sdk
• minio-java
• client-sdk
• aws-s3
• s3-bucket

547.sirixdb / sirix

SirixDB is an an embeddable, bitemporal, append-only database system and event store, storing immutable lightweight snapshots. It keeps the full history of each resource. Every commit stores a space-efficient snapshot through structural sharing. It is log-structured and never overwrites data. SirixDB uses a novel page-level versioning approach.

• xquery
• java
• temporal-data
• storage
• snapshot
• comparison
• +14 more

548.hivemq / hivemq-community-edition

HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform

• mqtt-broker
• hivemq
• mqtt
• iot
• java
• messaging
• +7 more

549.mysql / mysql-connector-j

MySQL Connector/J

550.linkedin / brooklin

An extensible distributed system for reliable nearline data streaming at scale

• distributed-systems
• data-streaming
• scalability
• kafka-mirror-maker
• kafka
• change-data-capture
• +2 more

551.code-disaster / steamworks4j

A thin Java wrapper to access the Steamworks API

• java
• bindings
• steamworks

552.dicoogle / dicoogle

Dicoogle - Open Source PACS

• dicoogle
• dicom
• pacs
• medical-imaging
• medical-image-computing
• medical-informatics
• +7 more

553.Password4j / password4j

Java cryptographic library that supports Argon2, bcrypt, scrypt and PBKDF2 aimed to protect passwords in databases. Easy to use by design, highly customizable, secure and portable. All the implementations follow the standards and have been reviewed to perform better in the JVM.

• pbkdf2
• bcrypt
• scrypt
• argon2
• password
• hashing
• +10 more

554.SquirrelJME / SquirrelJME

SquirrelJME is a Java ME 8 Virtual Machine for embedded and Internet of Things devices. It has the ultimate goal of being 99.9% compatible with the Java ME standard.

• squirreljme
• java
• java-me
• iot
• embedded
• jvm
• +9 more

555.OpenAS2 / OpenAs2App

OpenAS2 is a java-based implementation of the EDIINT AS2 standard. It is intended to be used as a server. It is extremely configurable and supports a wide variety of signing and encryption algorithms.

556.lgvalle / Material-Animations

Android Transition animations explanation with examples.

557.youth5201314 / banner

🔥🔥🔥Banner 2.0 来了！Android广告图片轮播控件，内部基于ViewPager2实现，Indicator和UI都可以自定义。

• banner
• viewpager
• viewpager2
• indicator
• androidx

558.H07000223 / FlycoTabLayout

An Android TabLayout Lib

559.JessYanCoding / MVPArms

⚔️ A common architecture for Android applications developing based on MVP, integrates many open source projects, to make your developing quicker and easier (一个整合了大量主流开源项目高度可配置化的 Android MVP 快速集成框架).

• mvp
• rxjava
• retrofit2
• dagger2
• architectural
• wiki-documentation
• +14 more

560.ksoichiro / Android-ObservableScrollView

Android library to observe scroll events on scrollable views.

• android
• android-library
• android-ui
• material-design

561.google / android-classysharkArchived

Android and Java bytecode viewer

• dex
• classyshark
• jar
• android
• java
• apk
• +4 more

562.graphql-java / graphql-java

GraphQL Java implementation

• graphql
• graphql-java
• java

563.KeepSafe / TapTargetView

An implementation of tap targets from the Material Design guidelines for feature discovery.

• material
• feature-discovery
• android
• material-design
• ui
• material-components

564.h6ah4i / android-advancedrecyclerview

RecyclerView extension library which provides advanced features. (ex. Google's Inbox app like swiping, Play Music app like drag and drop sorting)

• android
• recyclerview
• drag-and-drop
• swipe
• expandable
• header
• +1 more

565.bytedeco / javacpp

The missing bridge between Java and native C++

• javacpp
• java
• c
• cpp
• c-plus-plus
• jni
• +1 more

566.chewiebug / GCViewer

Fork of tagtraum industries' GCViewer. Tagtraum stopped development in 2008, I aim to improve support for Sun's / Oracle's java 1.6+ garbage collector logs (including G1 collector)

567.dariuszseweryn / RxAndroidBle

An Android Bluetooth Low Energy (BLE) Library with RxJava3 interface

• ble
• bluetooth-low-energy
• bluetooth-le
• android-bluetooth
• rxjava
• rxjava2
• +2 more

568.javamelody / javamelody

JavaMelody : monitoring of JavaEE applications

• performance
• monitoring
• metrics
• apm

569.sarxos / webcam-capture

The goal of this project is to allow integrated or USB-connected webcams to be accessed directly from Java. Using provided libraries users are able to read camera images and detect motion. Main project consist of several sub projects - the root one, which contains required classes, build-in webcam driver compatible with Windows, Linux and Mac OS, which can stream images as fast as your camera can serve them (up to 50 FPS). Main project can be used standalone, but user is able to replace build-in driver with different one - such as OpenIMAJ, GStreamer, V4L4j, JMF, LTI-CIVIL, FMJ, etc.

• webcam
• java
• webcam-capture

570.felHR85 / UsbSerial

Usb serial controller for Android

• usb-serial-controller
• ftdi-devices
• serial
• serialport
• android
• hardware
• +9 more

571.nguyenq / tess4j

Java JNA wrapper for Tesseract OCR API

572.Netflix / mantis

A platform that makes it easy for developers to build realtime, cost-effective, operations-focused applications

573.allegro / hermes

Fast and reliable message broker built on top of Kafka.

• hermes
• kafka
• pubsub
• messaging
• hacktoberfest

574.crashinvaders / gdx-texture-packer-gui

A simple way to pack and manage texture atlases for libGDX game framework.

• libgdx
• texturepacker
• texture-atlas
• texture-packing
• utility

575.schibsted / jslt

JSON query and transformation language

• java
• json
• query
• transform
• language
• jackson

576.labexp / osmtracker-android

GPS tracking tool for OpenStreetMap

• gpx
• openstreetmap
• osm

577.refactorfirst / RefactorFirst

Identifies and prioritizes Class and Package Cycles and Anti-pattens in Java & Kotlin codebases you should refactor first.

• maven-plugin
• maven
• java
• report
• static-analysis
• refactoring
• +4 more

578.schildbach / public-transport-enabler

Unleash public transport data in your Java project.

• java
• library
• public-transportation
• navitia
• hafas
• efa

579.conveyal / r5

Developed to power Conveyal's web-based interface for scenario planning and land-use/transport accessibility analysis, R5 is our routing engine for multimodal (transit/bike/walk/car) networks with a particular focus on public transit

• transportation
• transit
• planning
• gtfs
• modeling
• accessibility

580.NationalSecurityAgency / timely

Accumulo backed time series database

• accumulo
• series-database
• time-series
• hacktoberfest
• timeseries

581.abhishektripathi66 / DSA

Learn the DSA and be Interview ready

• dsa
• java
• coding-challenges
• data-structures-and-algorithms
• dsa-learning-series
• hacktoberfest-accepted
• +1 more

582.focus-shift / jollyday

Jollyday - A worldwide public holidays library

• java
• public-holiday-calender
• public-holidays
• bank-holidays
• holidays
• publicholidays
• +6 more

583.Cap-go / capacitor-inappbrowser

Capacitor plugin in app browser with urlChangeEvent

• browser
• capacitor
• capacitor-plugin

584.alibaba / fastjsonArchived

FASTJSON 2.0.x has been released, faster and more secure, recommend you upgrade.

• fastjson
• java
• android
• json
• json-parser
• json-serialization
• +4 more

585.androidannotations / androidannotationsArchived

Fast Android Development. Easy maintainance.

• android
• java
• androidannotations
• annotation-processor

586.navasmdc / MaterialDesignLibrary

This is a library with components of Android L to you use in android 2.2

• android
• material-design

587.Bearded-Hen / Android-Bootstrap

Bootstrap style widgets for Android, with Glyph Icons

• java
• bootstrap-brands
• glyph-icons
• twitter-bootstrap-specification
• android-bootstrap
• android
• +4 more

588.joelittlejohn / jsonschema2pojo

Generate Java types from JSON or JSON Schema and annotate those types for data-binding with Jackson, Gson, etc

• java
• json-schema
• json
• jackson
• gson
• maven-plugin
• +1 more

589.lets-blade / blade

:rocket: Lightning fast and elegant mvc framework for Java8

• mvc-framework
• restful
• blade
• netty4
• template-engine
• java8

590.yasserg / crawler4j

Open Source Web Crawler for Java

591.azkaban / azkaban

Azkaban workflow manager.

• workflow-engine
• azkaban
• scheduling
• hacktoberfest

592.dragonwell-project / dragonwell8

Alibaba Dragonwell8 JDK

• dragonwell8
• java
• openjdk
• jdk
• lts
• java8

593.spockframework / spock

The Enterprise-ready testing and specification framework.

• java
• groovy
• testing
• bdd-style-testing-framework
• spock-framework

594.zeromq / jeromq

JeroMQ is a pure Java implementation of the ZeroMQ messaging library, offering high-performance asynchronous messaging for distributed or concurrent applications.

• jeromq
• libzmq
• messaging
• networking
• pubsub
• pushpull
• +4 more

595.android / connectivity-samplesArchived

Multiple samples showing the best practices in connectivity on Android.

596.kiegroup / jbpm

a Business Process Management (BPM) Suite

• jbpm
• bpm
• bpmn
• business-process
• case-management
• workflow
• +4 more

597.spring-projects / spring-integration

Spring Integration provides an extension of the Spring programming model to support the well-known Enterprise Integration Patterns (EIP)

• spring
• java
• eip
• microservices

598.msgpack / msgpack-java

MessagePack serializer implementation for Java / msgpack.org[Java]

599.JetBrains / xodus

Transactional schema-less embedded database used by JetBrains YouTrack and JetBrains Hub.

• embedded-database
• java
• kotlin
• key-value
• entity-store
• transactional
• +8 more

600.SonarSource / sonar-java

:coffee: SonarSource Static Analyzer for Java Code Quality and Security

• java
• sonarqube
• static-code-analysis
• static-analyzer
• static-analysis
• language-team
• +5 more