Trending repositories

1.termux / termux-app

Termux - a terminal emulator application for Android OS extendible by variety of packages.

• android
• terminal
• termux
• linux
• hacktoberfest

2.OtterMind / Chat2DB

Chat2DB is a free, cross-platform, local-first database client and SQL workspace for developers, DBAs, analysts, and data teams. Connect to 40+ databases, manage data, edit and run SQL, and use your own AI model to generate, explain, and optimize queries. Available on desktop, web, Docker, and CLI, with MCP support.

• ai
• mysql
• oracle
• postgresql
• redis
• database
• +14 more

3.elastic / elasticsearch

Free and Open Source, Distributed, RESTful Search Engine

• elasticsearch
• java
• search-engine

4.iluwatar / java-design-patterns

Design patterns implemented in Java

• java
• principles
• design-patterns
• awesome-list
• snippets
• snippets-collection
• +2 more

5.LawnchairLauncher / lawnchair

No clever tagline needed.

• android
• launcher
• launcher3
• app
• kotlin
• hacktoberfest
• +1 more

6.thingsboard / thingsboard

All-in-one IoT Platform - Device management, data collection, processing and visualization.

• visualization
• iot
• iot-platform
• mqtt
• middleware
• thingsboard
• +12 more

7.aklivity / zilla

🦎 A lightweight, streaming-native, multi-protocol gateway for AI, APIs, and real-time data. Route LLM requests across providers, govern MCP tools, and connect Kafka, MQTT, and HTTP through one high-performance engine with shared security and observability.

• kafka
• rest
• server-sent-events
• streaming-api
• grpc
• mqtt
• +9 more

8.dataease / dataease

🔥 人人可用的开源 BI 工具，数据可视化神器。An open-source BI tool alternative to Tableau.

• tableau
• data-visualization
• superset
• apache-doris
• data-analysis
• business-intelligence
• +2 more

9.gsantner / markor

Text editor - Notes, ToDo & Filemanager (for Android) - Markdown, todo.txt, plaintext, math, ..

• markdown
• markdown-editor
• android-app
• editor
• todo
• todotxt
• +14 more

10.JetBrains / intellij-community

IntelliJ IDEA & IntelliJ Platform

• intellij
• intellij-platform
• ide
• code-editor
• intellij-community

11.PaperMC / Paper

The most widely used, high performance Minecraft server that aims to fix gameplay and mechanics inconsistencies

• minecraft
• bukkit
• minecraft-server
• minecraft-api
• minecraft-performance
• tacos
• +4 more

12.metersphere / metersphere

MeterSphere 是新一代的开源持续测试工具，内置 AI 助手，让软件测试工作更简单、更高效，不再成为持续交付的瓶颈。

• jmeter
• testing
• test-automation
• api-testing
• testcase
• testlink
• +5 more

13.osmandapp / OsmAnd

OsmAnd

14.supertokens / supertokens-core

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

• authentication
• session-management
• login
• supertokens
• java
• signin
• +13 more

15.openrocket / openrocket

Model-rocketry aerodynamics and trajectory simulation software

• aerospace
• flight-simulator
• java
• modeling
• optimization
• rocket
• +3 more

16.CaffeineMC / sodium

A high-performance rendering engine replacement for Minecraft, which greatly improves frame rates and reduces micro-stutter

• minecraft
• fabric
• neoforge

17.MinecraftForge / MinecraftForge

Modifications to the Minecraft base files to assist in compatibility between mods. New Discord: https://discord.minecraftforge.net/

• java
• forge
• minecraft
• mod

18.oracle / graal

GraalVM compiles applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀

• java
• aot
• compiler
• graalvm

19.alibaba / DataX

DataX是阿里云DataWorks数据集成的开源版本。

20.openremote / core

100% open-source IoT Platform - Integrate your devices, add intelligence, build custom apps

• iot-platform
• iot
• energy
• building
• mqtt
• smartcity
• +14 more

21.yacy / yacy_search_server

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

• decentralized
• p2p
• p2p-network
• privacy
• privacy-protection
• search-engine
• +7 more

22.arduino / Arduino

Arduino IDE 1.x

• arduino
• ide

23.elastic / logstash

Logstash - transport and process your logs, events, or other data

• etl-framework
• streaming
• logging
• java
• jruby
• real-time-processing

24.geoserver / geoserver

Official GeoServer repository

• web
• mapping
• web-mapping
• java
• geoserver
• wms
• +4 more

25.liquibase / liquibase

Main Liquibase Source

• java
• liquibase
• database-migrations
• java-library
• continuous-delivery
• devops
• +11 more

26.jobrunr / jobrunr

An extremely easy way to perform background processing in Java. Backed by persistent storage. Open and free for commercial use.

• java-8
• background-jobs
• parallel-processing
• scheduling
• scheduled-jobs
• java
• +3 more

27.pmd / pmd

An extensible multilanguage static code analyzer.

• code-analysis
• code-quality
• static-analysis
• static-code-analysis
• linter
• java
• +4 more

28.opentripplanner / OpenTripPlanner

An open source multi-modal trip planner

29.rstudio / rstudio

RStudio is an integrated development environment (IDE) for R

30.LibrePDF / OpenPDF

OpenPDF is an open-source Java library for creating, editing, rendering, and encrypting PDF documents, as well as generating PDFs from HTML. It is licensed under the LGPL and MPL.

• pdf
• pdf-generation
• java
• itext
• openpdf
• kotlin
• +1 more

31.bumptech / glide

An image loading and caching library for Android focused on smooth scrolling

32.jOOQ / jOOQ

jOOQ is the best way to write SQL in Java

• jooq
• java
• sql
• jpa
• sql-builder
• sql-query
• +14 more

33.google / google-java-format

Reformats Java source code to comply with Google Java Style.

• java
• formatter

34.EngineHub / WorldEdit

🗺️ Minecraft map editor and mod

• worldedit
• java
• minecraft
• forge
• bukkit
• sponge
• +3 more

35.ta4j / ta4j

A Java library for technical analysis.

• java-library
• stocks
• forex
• bitcoin
• ethereum
• trading-algorithms
• +5 more

36.AppliedEnergistics / Applied-Energistics-2

A Minecraft Mod about Matter, Energy and using them to conquer the world..

• minecraft
• minecraft-mod
• appliedenergistics
• applied-energistics
• forge
• java
• +3 more

37.javaparser / javaparser

Java 1-25 Parser and Abstract Syntax Tree for Java with advanced analysis functionalities.

• javaparser
• parser
• java
• javadoc
• code-generation
• code-generator
• +5 more

38.pentaho / pentaho-kettle

Pentaho Data Integration ( ETL ) a.k.a Kettle

39.JanusGraph / janusgraph

JanusGraph: an open-source, distributed graph database

• graph-database
• tinkerpop
• gremlin
• hbase
• cassandra
• elasticsearch
• +4 more

40.Tencent / matrix

Matrix is a plugin style, non-invasive APM system developed by WeChat.

• android
• apm-client
• wechat

41.Tencent / tinker

Tinker is a hot-fix solution library for Android, it supports dex, library and resources update without reinstall apk.

• android
• dynamic
• hotfix
• wechat

42.projectlombok / lombok

Very spicy additions to the Java programming language.

43.codenameone / CodenameOne

Open-source framework for native apps from one Java codebase, with a custom-rendered UI you control across iOS, Android, desktop, web, and watches.

• cross-platform
• java
• kotlin
• android
• ios
• app-framework
• +14 more

44.APIJSON / APIJSON

🏆 Real-Time no-code, powerful and secure ORM 🚀 providing APIs and Docs without coding by Backend, and Frontend(Client) can customize response JSONs 🏆 实时 零代码、全功能、强安全 ORM 库 🚀 后端接口和文档零代码，前端(客户端) 定制返回 JSON 的数据和结构

• postgresql-database
• tidb
• sqlserver
• oracle
• clickhouse
• postgresql
• +14 more

45.hazelcast / hazelcast

Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.

• java
• hazelcast
• in-memory
• big-data
• scalability
• distributed
• +9 more

46.Loophole-LLC / Bastillion

Bastillion gives you a clean, browser-based way to manage SSH access across all your systems—like a bastion host with a friendly dashboard.

• ssh
• bastion-host
• java
• javascript
• web-app
• web-based
• +8 more

47.mucommander / mucommander

A lightweight, cross-platform file manager with a dual-pane interface

• hacktoberfest

48.eclipse-vertx / vert.x

Vert.x is a tool-kit for building reactive applications on the JVM

• vertx
• java
• netty
• reactive
• jvm
• http2
• +5 more

49.paohaijiao / jquick-pdf

JQuick-Pdf is an enterprise-grade Java PDF generation framework. It provides HTML-like declarative syntax and supports more than 30 kinds of graphs, greatly simplifying complex PDF report creation while retaining full native pdfbox(since version 4.0.0) APIs.

• apache-pdfbox
• charts
• data-visualization
• fonts
• i18n
• java
• +14 more

50.mapstruct / mapstruct

An annotation processor for generating type-safe bean mappers

• mapstruct
• java
• annotation-processor
• mapping
• javabeans
• no-reflection
• +2 more

51.bytedeco / javacv

Java interface to OpenCV, FFmpeg, and more

• javacv
• java
• opencv
• ffmpeg
• computer-vision
• multimedia
• +2 more

52.haifengl / smile

Statistical Machine Intelligence & Learning Engine

• machine-learning
• regression
• clustering
• manifold-learning
• nlp
• visualization
• +14 more

53.java-native-access / jna

Java Native Access

54.Vedenin / useful-java-links

A list of useful Java frameworks, libraries, software and hello worlds examples

• java-links
• java-frameworks
• awesome-list
• machine-learning
• java-libraries
• java-api
• +4 more

55.TASEmulators / freej2me-plus

A free J2ME emulator with libretro, awt and sdl2 frontends.

56.jline / jline3

JLine is a Java library for handling console input.

• cli
• console
• java

57.nextgenhealthcare / connect

The swiss army knife of healthcare integration.

• mirth
• mirth-connect
• hl7
• healthcare
• integration
• interoperability

58.VazkiiMods / Botania

A tech mod for Minecraft themed around the magic of nature and plant life.

• minecraft
• java
• hacktoberfest

59.xonotic / xonotic

Mirror of https://gitlab.com/xonotic/xonotic - Xonotic (superproject containing build scripts and tools to download other repositories and assets)

• xonotic
• nexuiz
• 3d-game
• fps-game
• game
• q3a
• +6 more

60.aosp-mirror / platform_frameworks_baseArchived

No description provided by the repository host.

61.CalebFenton / simplify

Android virtual machine and deobfuscator

• deobfuscation
• java
• optimization
• android
• reverse-engineering
• malware-analysis
• +9 more

62.imagej / ImageJ

Public domain software for processing and analyzing scientific images

• image-processing
• computer-vision

63.Tencent / QMUI_Android

提高 Android UI 开发效率的 UI 库

• android
• android-ui
• ui-components

64.eclipse-openj9 / openj9

Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.

• java
• jvm
• eclipse-openj9
• compiler
• garbage-collector
• gc
• +5 more

65.hex007 / freej2me

A free J2ME emulator with libretro, awt and sdl2 frontends.

• j2me
• emulator
• emulator-frontend
• libretro
• sdl2
• sdl2-frontends
• +1 more

66.confluentinc / schema-registry

Confluent Schema Registry for Kafka

• schema-registry
• kafka
• schema
• schemas
• avro
• avro-schema
• +6 more

67.INRIA / spoon

Spoon is a metaprogramming library to analyze and transform Java source code. :spoon: is made with :heart:, :beers: and :sparkles:. It parses source files to build a well-designed AST with powerful analysis and transformation API.

• code-analysis
• code-transformation
• metaprogramming
• code-generation
• abstract-syntax-tree
• ast
• +10 more

68.schemacrawler / SchemaCrawler

Free database schema discovery and comprehension tool

• schemacrawler
• jdbc
• database-diagrams
• schema
• java
• database
• +11 more

69.openhtmltopdf / openhtmltopdf

An HTML to PDF library for the JVM. Based on Flying Saucer and Apache PDF-BOX 3. With SVG image support. Now also with accessible PDF support (WCAG, Section 508, PDF/UA)!

70.dhatim / fastexcel

Generate and read big Excel files quickly

• excel
• java
• performance

71.chriswhocodes / jitwatch

Log analyser / visualiser for Java HotSpot JIT compiler. Inspect inlining decisions, hot methods, bytecode, and assembly. View results in the JavaFX user interface.

• jitwatch
• java
• javafx
• hotspot-jit-compiler
• hotspot
• log-analyser
• +2 more

72.mstrobel / procyon

Procyon is a suite of Java metaprogramming tools, including a rich reflection API, a LINQ-inspired expression tree API for runtime code generation, and a Java decompiler.

73.zendesk / maxwell

Maxwell's daemon, a mysql-to-json kafka producer

74.SmartBear / soapui

SoapUI is a free and open source cross-platform functional testing solution for APIs and web services.

• open-source
• on-prem
• soapui-oss

75.EngineHub / WorldGuard

🛡️ Protect your Minecraft server and lets players claim areas

• worldguard
• java
• minecraft
• worldedit

76.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

77.MarcusWolschon / osmeditor4android

Vespucci is a OpenStreetMap editor for Android

78.OpenOLAT / OpenOLAT

Learning Management System OpenOlat

• elearning
• lms
• java
• education
• assessment
• content
• +11 more

79.bytedeco / javacpp

The missing bridge between Java and native C++

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

80.OpenIdentityPlatform / OpenAM

OpenAM is an open-source access management solution for identity authentication, authorization, and federation. It provides single sign-on, adaptive authentication, and centralized policy control, enabling secure access to web, mobile, and cloud applications

• openam
• sso
• oauth
• saml
• aaa
• authentication
• +14 more

81.stleary / JSON-java

A reference implementation of a JSON package in Java.

• hacktoberfest
• java
• json
• public-domain

82.jboss-javassist / javassist

Java bytecode engineering toolkit

• java-bytecode
• java

83.thevpc / nuts

Nuts Java Package Manager

• package-manager
• java
• devops
• maven

84.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)

85.flyingsaucerproject / flyingsaucer

XML/XHTML and CSS 2.1 renderer in pure Java

86.deathmarine / Luyten

An Open Source Java Decompiler Gui for Procyon

87.google / j2objc

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

88.mysql / mysql-connector-j

MySQL Connector/J

89.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

90.DiUS / java-faker

Brings the popular ruby faker gem to Java

• java
• faker-gem
• java-faker

91.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

92.allegro / hermes

Fast and reliable message broker built on top of Kafka.

• hermes
• kafka
• pubsub
• messaging
• hacktoberfest

93.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

94.apache / openmeetings

Mirror of Apache Openmeetings

• network-server
• java
• openmeetings
• network-client

95.confluentinc / ksql

The database purpose-built for stream processing applications.

• stream-processing
• real-time
• sql
• interactive
• kafka
• kafka-connect
• +6 more

96.kaitoy / pcap4j

A Java library for capturing, crafting, and sending packets.

• capture-packets
• winpcap
• libpcap
• sending-packets
• java-library
• pcap-library
• +3 more

97.tdebatty / java-string-similarity

Implementation of various string similarity and distance algorithms: Levenshtein, Jaro-winkler, n-Gram, Q-Gram, Jaccard index, Longest Common Subsequence edit distance, cosine similarity ...

• java
• levenshtein-distance
• cosine-similarity
• string-distance
• damerau-levenshtein
• distance
• +5 more

98.androidannotations / androidannotationsArchived

Fast Android Development. Easy maintainance.

• android
• java
• androidannotations
• annotation-processor

99.jnr / jnr-ffi

Java Abstracted Foreign Function Layer

100.rabbitmq / rabbitmq-java-client

RabbitMQ Java client

• rabbitmq
• java