Trending repositories

501.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)

502.failsafe-lib / failsafe

Fault tolerance and resilience patterns for the JVM

• java
• retry
• resilience
• timeout
• rate-limiter
• bulkhead
• +3 more

503.prometheus / client_java

Prometheus instrumentation library for JVM applications

• instrumentation
• java
• metrics
• prometheus

504.flyingsaucerproject / flyingsaucer

XML/XHTML and CSS 2.1 renderer in pure Java

505.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

506.phax / phase4

phase4 - AS4 client and server for integration into existing systems. Specific support for Peppol and CEF eDelivery built-in.

• as4
• java
• eprocurement
• einvoicing
• edelivery
• peppol
• +8 more

507.dreamhead / moco

Easy Setup Stub Server

508.microsoft / malmoArchived

Project Malmo is a platform for Artificial Intelligence experimentation and research built on top of Minecraft. We aim to inspire a new generation of research into challenging new problems presented by this unique environment. --- For installation instructions, scroll down to *Getting Started* below, or visit the project page for more information:

509.minio / minio-java

MinIO Client SDK for Java

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

510.arianne / stendhal

Stendhal is a fun friendly and free multiplayer online adventure game with an old school feel.

• game
• game-server
• rpg
• mmorpg
• java

511.nats-io / nats.java

Java client for NATS

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

512.AsyncHttpClient / async-http-client

Asynchronous, non-blocking HTTP & WebSocket client for the JVM

• netty
• async
• java
• asynchttpclient
• ahc
• http-client

513.apache / linkis

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
• livy
• linkis
• +14 more

514.javamelody / javamelody

JavaMelody : monitoring of JavaEE applications

• performance
• monitoring
• metrics
• apm

515.google / jimfs

An in-memory file system for Java

516.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

517.abhishektripathi66 / DSA

Learn the DSA and be Interview ready

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

518.lopcode / vips-ffm

Fast, safe, complete libvips bindings for image processing in Java / JVM projects

• ffm
• image-processing
• java
• libvips
• vips
• photo-fox
• +4 more

519.ReactiveX / RxAndroid

RxJava bindings for Android

520.googlesamples / easypermissionsArchived

Simplify Android M system permissions

• android
• android-library
• permissions

521.SAP / SapMachine

An OpenJDK release maintained and supported by SAP

• openjdk
• java
• open-source
• jdk
• javase
• jvm
• +1 more

522.apache / inlong

Apache InLong - a one-stop, full-scenario integration framework for massive data

• inlong
• one-stop-service
• data-streaming
• event-streaming
• framework
• massive-data-integration
• +1 more

523.MobiVM / robovm

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

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

524.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

525.google / j2objc

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

526.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

527.bonigarcia / webdrivermanager

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

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

528.amaembo / streamex

Enhancing Java Stream API

• java
• java8
• collections
• streams-api

529.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

530.mysql / mysql-connector-j

MySQL Connector/J

531.nostra13 / Android-Universal-Image-Loader

Powerful and flexible library for loading, caching and displaying images on Android.

532.daimajia / AndroidSwipeLayout

The Most Powerful Swipe Layout!

533.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

534.lipangit / JiaoZiVideoPlayerArchived

MediaPlayer exoplayer ijkplayer ffmpeg

• project

535.dropwizard / metrics

:chart_with_upwards_trend: Capturing JVM- and application-level metrics. So you know what's going on.

• metrics
• java
• metrics-library
• dropwizard-metrics

536.OpenTSDB / opentsdb

A scalable, distributed Time Series Database.

537.yasserg / crawler4j

Open Source Web Crawler for Java

538.spockframework / spock

The Enterprise-ready testing and specification framework.

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

539.jgrapht / jgrapht

Master repository for the JGraphT project

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

540.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

541.knowm / XChart

XChart is a light-weight Java library for plotting data.

542.logicalclocks / hopsworks

Hopsworks - Data-Intensive AI platform with a Feature Store

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

543.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

544.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

545.lgvalle / Material-Animations

Android Transition animations explanation with examples.

546.permissions-dispatcher / PermissionsDispatcher

A declarative API to handle Android runtime permissions.

• android
• kotlin
• java
• permissions
• permission-android
• permissions-android
• +1 more

547.DiUS / java-faker

Brings the popular ruby faker gem to Java

• java
• faker-gem
• java-faker

548.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

549.dragonwell-project / dragonwell8

Alibaba Dragonwell8 JDK

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

550.android / connectivity-samplesArchived

Multiple samples showing the best practices in connectivity on Android.

551.nitrite / nitrite-java

NoSQL embedded document store for Java

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

552.osiegmar / FastCSV

Fast, lightweight, and RFC 4180 compliant CSV library for Java. Zero dependencies, ~90 KiB. Trusted by Apache NiFi, JUnit, and Neo4j.

• csv
• java
• csv-parser
• csv-reader
• zero-dependency

553.fair-acc / chart-fx

A scientific charting library focused on performance optimised real-time data visualisation at 25 Hz update rates for data sets with a few 10 thousand up to 5 million data points.

• chart-fx
• java
• charting-libraries
• javafx
• data-visualisation
• scientific-visualization
• +2 more

554.hdodenhof / CircleImageView

A circular ImageView for Android

• android
• imageview
• widget

555.realm / realm-java

Realm is a mobile database: a replacement for SQLite & ORMs

• java
• android
• database
• mobile
• realtime-database
• mobile-database
• +1 more

556.reactive-streams / reactive-streams-jvm

Reactive Streams Specification for the JVM

557.indy256 / codelibrary

:gem:Collection of algorithms and data structures

• algorithm
• data-structures
• java
• cpp
• kotlin

558.nguyenq / tess4j

Java JNA wrapper for Tesseract OCR API

559.sylvainhalle / textidote

Spelling, grammar and style checking on LaTeX documents

• latex
• grammar-checker
• spell-check
• spell-checker
• linter
• languagetool

560.code-disaster / steamworks4j

A thin Java wrapper to access the Steamworks API

• java
• bindings
• steamworks

561.yWorks / yGuard

The open-source Java obfuscation tool working with Ant and Gradle by yWorks - the diagramming experts

• obfuscation
• java
• ant
• bytecode-manipulation
• gradle-plugin
• ant-task
• +2 more

562.clarisma / geodesk

Fast and storage-efficient spatial database engine for OpenStreetMap data

• database
• geospatial
• openstreetmap
• geodesk
• gis

563.Atsumeru-xyz / Atsumeru

Free self-hosted mangas/comics/light novels media server

• api
• comicinfo
• comics
• java
• light-novels
• manga
• +3 more

564.http-kit / http-kit

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

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

565.toolbox4minecraft / amidst

Advanced Minecraft Interface and Data/Structure Tracking

• minecraft

566.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.

567.carrotsearch / hppc

High Performance Primitive Collections for Java

568.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

569.eclipse-platform / eclipse.platform

Eclipse Platform - a comprehensive set of frameworks and common services that collectively provide a powerful software development infrastructure.

• eclipse
• java

570.focus-shift / jollyday

Jollyday - A worldwide public holidays library

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

571.greenrobot / greenDAO

greenDAO is a light & fast ORM solution for Android that maps objects to SQLite databases.

572.square / javapoetArchived

A Java API for generating .java source files.

573.graphql-java / graphql-java

GraphQL Java implementation

• graphql
• graphql-java
• java

574.daimajia / NumberProgressBar

A beautiful, slim Android ProgressBar.

• numberprogressbar
• android
• prgressbar

575.KeepSafe / TapTargetView

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

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

576.azkaban / azkaban

Azkaban workflow manager.

• workflow-engine
• azkaban
• scheduling
• hacktoberfest

577.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

578.felHR85 / UsbSerial

Usb serial controller for Android

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

579.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

580.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

581.Randgalt / record-builder

Record builder generator for Java records

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

582.allegro / hermes

Fast and reliable message broker built on top of Kafka.

• hermes
• kafka
• pubsub
• messaging
• hacktoberfest

583.schildbach / public-transport-enabler

Unleash public transport data in your Java project.

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

584.rednblackgames / HyperLap2D

A powerful, platform-independent, visual editor for complex 2D worlds and scenes.

• game-development
• 2d-game
• cross-platform
• java
• libgdx
• game-engine

585.Farama-Foundation / MicroRTS

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

586.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

587.faissaloo / telegram-micro

Telegram implementation for J2ME devices

• j2me
• telegram

588.Bigkoo / Android-PickerView

This is a picker view for android , support linkage effect, timepicker and optionspicker.（时间选择器、省市区三级联动）

• pickerview
• timepicker
• optionspicker
• datepicker
• android-pickerview
• wheelview

589.zhihu / Matisse

:fireworks: A well-designed local image and video selector for Android

• android
• android-library
• android-image-picker
• android-image-selector
• video-selector

590.linkedin / databus

Source-agnostic distributed change data capture system

591.dariuszseweryn / RxAndroidBle

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

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

592.mongodb / mongo-java-driver

The official MongoDB drivers for Java, Kotlin, and Scala

• java
• java-library
• jvm
• mongodb
• database
• kotlin
• +3 more

593.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

594.kiegroup / jbpm

a Business Process Management (BPM) Suite

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

595.Netflix / mantis

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

596.ff4j / ff4j

Feature Flags for Java made easy

• feature
• toggle
• flipping

597.nsacyber / GRASSMARLINArchived

Provides situational awareness of Industrial Control Systems (ICS) and Supervisory Control and Data Acquisition (SCADA) networks in support of network security assessments. #nsacyber

• ics
• scada
• network
• networking
• monitor
• monitoring
• +5 more

598.H07000223 / FlycoTabLayout

An Android TabLayout Lib

599.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

600.ksoichiro / Android-ObservableScrollView

Android library to observe scroll events on scrollable views.

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