Browse free open source Java Libraries and projects below. Use the toggles on the left to filter open source Java Libraries by OS, license, language, programming language, and project status.

  • AestheticsPro Medical Spa Software Icon
    AestheticsPro Medical Spa Software

    Our new software release will dramatically improve your medspa business performance while enhancing the customer experience

    AestheticsPro is the most complete Aesthetics Software on the market today. HIPAA Cloud Compliant with electronic charting, integrated POS, targeted marketing and results driven reporting; AestheticsPro delivers the tools you need to manage your medical spa business. It is our mission To Provide an All-in-One Cutting Edge Software to the Aesthetics Industry.
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  • Turn traffic into pipeline and prospects into customers Icon
    Turn traffic into pipeline and prospects into customers

    For account executives and sales engineers looking for a solution to manage their insights and sales data

    Docket is an AI-powered sales enablement platform designed to unify go-to-market (GTM) data through its proprietary Sales Knowledge Lake™ and activate it with intelligent AI agents. The platform helps marketing teams increase pipeline generation by 15% by engaging website visitors in human-like conversations and qualifying leads. For sales teams, Docket improves seller efficiency by 33% by providing instant product knowledge, retrieving collateral, and creating personalized documents. Built for GTM teams, Docket integrates with over 100 tools across the revenue tech stack and offers enterprise-grade security with SOC 2 Type II, GDPR, and ISO 27001 compliance. Customers report improved win rates, shorter sales cycles, and dramatically reduced response times. Docket’s scalable, accurate, and fast AI agents deliver reliable answers with confidence scores, empowering teams to close deals faster.
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  • 1
    PSLab Android App

    PSLab Android App

    PSLab Android App

    Repository for the PSLab Android App for performing experiments with the Pocket Science Lab open-hardware platform. This repository holds the Android App for performing experiments with PSLab. PSLab is a tiny pocket science lab that provides an array of equipment for doing science and engineering experiments. It can function like an oscilloscope, waveform generator, frequency counter, programmable voltage and current source and also as a data logger. PSLab is a tiny pocket science lab that provides an array of equipment for doing science and engineering experiments.
    Downloads: 5 This Week
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  • 2
    S3Mock

    S3Mock

    A simple mock implementation of the AWS S3 API startable as Docker

    S3Mock is a lightweight server that implements parts of the Amazon S3 API. It has been created to support local integration testing by reducing infrastructure dependencies. The S3Mock server can be started as a standalone Docker container, using Test containers, JUnit4, JUnit5 and TestNG support, or programmatically.
    Downloads: 5 This Week
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  • 3
    TableView for Android

    TableView for Android

    Powerful Android library for displaying complex data structures

    TableView is a powerful Android library for displaying complex data structures and rendering tabular data composed of rows, columns and cells. TableView relies on a separate model object to hold and represent the data it displays. This repository also contains a sample app that is designed to show you how to create your own TableView in your application.
    Downloads: 5 This Week
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  • 4
    JDatePicker: Java Swing Date Picker

    JDatePicker: Java Swing Date Picker

    This project now lives at: https://github.com/JDatePicker/JDatePicker

    This project now lives at: https://github.com/JDatePicker/JDatePicker Will keep this sf.net project active to point to github. JDatePicker and JDatePanel is an set of advanced DatePicker controls for Java Swing applications. The MVC design enables us to display any date object such as Joda-Time DateMidnight. The date picker also works well with JGoodies Binding.
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    Downloads: 26 This Week
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  • The AI workplace management platform Icon
    The AI workplace management platform

    Plan smart spaces, connect teams, manage assets, and get insights with the leading AI-powered operating system for the built world.

    By combining AI workflows, predictive intelligence, and automated insights, OfficeSpace gives leaders a complete view of how their spaces are used and how people work. Facilities, IT, HR, and Real Estate teams use OfficeSpace to optimize space utilization, enhance employee experience, and reduce portfolio costs with precision.
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  • 5
    Android-GoogleDirectionLibrary

    Android-GoogleDirectionLibrary

    Library for Google Direction API for Google Maps Android API v2

    Library for Google Direction API for Google Maps Android API v2.
    Downloads: 4 This Week
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  • 6
    FABRevealMenu

    FABRevealMenu

    A general purpose Android UI library to show a user show menu

    A simple general-purpose UI library to create a custom user-defied menu in a modern way with your favorite Floating action button. It incorporates a lollipop circular reveal view with cool animations somewhat inspired by Google Material Design guidelines.
    Downloads: 4 This Week
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  • 7
    GraphHopper Routing Engine

    GraphHopper Routing Engine

    Open source routing engine for OpenStreetMap

    GraphHopper invests in an active open source community. Our flagships are the GraphHopper routing engine and jsprit, the toolkit for solving rich vehicle routing problems. We promote a fair & diverse mindset. jsprit is a Java based toolkit for solving rich traveling salesman problems (TSP) and vehicle routing problems (VRP). It is lightweight, flexible, easy-to-use, and based on a single all-purpose meta-heuristic. The GraphHopper routing engine is fast and memory-efficient, using Java. It runs server side, offline on Android and iOS. It uses OpenStreetMap data, but can import other data sources as well. GraphHopper is a fast and memory-efficient routing engine released under Apache License 2.0. It can be used as a Java library or standalone web server to calculate the distance, time, turn-by-turn instructions and many road attributes for a route between two or more points. Beyond this "A-to-B" routing it supports "snap to road", Isochrone calculation, mobile navigation and more.
    Downloads: 4 This Week
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  • 8
    Helidon

    Helidon

    Java libraries for writing microservices

    Helidon is a cloud-native, open‑source set of Java libraries for writing microservices that run on a fast web core powered by Netty. Helidon Níma is the first Java microservices framework based on virtual threads. Helidon is designed to be simple to use, with tooling and examples to get you going quickly. Since Helidon is simply a collection of Java libraries running on a fast Netty core, there is no extra overhead or bloat. Helidon supports MicroProfile and provides familiar APIs like JAX-RS, CDI and JSON-P/B. Our implementation runs on our fast Helidon Reactive WebServer. Helidon Reactive WebServer provides a modern functional programming model and runs on top of Netty. Lightweight, flexible and reactive, the Helidon WebServer provides a simple-to-use and fast foundation for your microservices.
    Downloads: 4 This Week
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  • 9
    JTS Topology Suite

    JTS Topology Suite

    Java library for creating and manipulating vector geometry.

    The JTS Topology Suite is a Java library for creating and manipulating vector geometry. It also provides a comprehensive set of geometry test cases, and the TestBuilder GUI application for working with and visualizing geometry and JTS functions.
    Downloads: 4 This Week
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  • MicroStation by Bentley Systems is the trusted computer-aided design (CAD) software built specifically for infrastructure design. Icon
    MicroStation by Bentley Systems is the trusted computer-aided design (CAD) software built specifically for infrastructure design.

    Microstation enables architects, engineers, and designers to create precise 2D and 3D drawings that bring complex projects to life.

    MicroStation is the only computer-aided design software for infrastructure design, helping architects and engineers like you bring their vision to life, present their designs to their clients, and deliver their projects to the community.
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  • 10
    MPAndroidChart

    MPAndroidChart

    A powerful Android chart view / graph view library

    MPAndroidChart is a powerful chart library for Android that offers a beautiful and comprehensive range of charts and graphs. Powerful and very easy to use, it supports the creation of bar-, line-, pie-, bubble-, scatter-, radar- and candlestick charts, as well as scaling, dragging and animations. Charts are rendered cleanly and are visually engaging. Visualizing your data exactly how you want is so much easier with MPAndroidChart. To see more great examples of MPAndroidChart, download the MPAndroidChart Example App on Google Play.
    Downloads: 4 This Week
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  • 11
    SeriesGuide

    SeriesGuide

    Track your favorite TV shows and movies on Android devices

    SeriesGuide highlights shows with new episodes and is backed by the huge TV show catalog of TMDb. It can display movies currently in cinemas or released digitally and offers access to the huge movie catalog of TMDb. It also integrates with Trakt to sync your watched episodes and movies. Connect your Trakt account or sign into SeriesGuide Cloud to sync your watched episodes and movies. Hit the share button to post a link to an awesome episode or movie to any Android app, including WhatsApp, Signal, Facebook and Twitter. Visual indicators make it easy to see remaining episodes and to spot unseen episodes. The statistics tool sums how many hours you have spent watching (and still have to).
    Downloads: 4 This Week
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  • 12
    Vavr

    Vavr

    Object-functional library that runs with Java 8+

    Vavr core is a functional library for Java. It helps to reduce the amount of code and to increase the robustness. A first step towards functional programming is to start thinking in immutable values. Vavr provides immutable collections and the necessary functions and control structures to operate on these values. The results are beautiful and just work. The Vavr binaries can be found on Maven Central. Beside with Gradle and Maven they work also standalone. The documentation gives an overview and covers the concepts in depth. It is the best way to get started with Vavr. Vavr is open source and can be found on Github. It is distributed under the Apache 2.0 License. There are several additional modules that group around Vavr's core. All of these are supported by the Vavr open-source organization. Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners.
    Downloads: 4 This Week
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  • 13
    openHAB Distribution

    openHAB Distribution

    The binary distribution of openHAB

    The open Home Automation Bus (openHAB) project aims to provide a universal integration platform for all things around home automation. It is a pure Java solution, fully based on OSGi. It is designed to be vendor-neutral as well as hardware/protocol-agnostic. openHAB brings together different bus systems, hardware devices, and interface protocols by dedicated bindings. These bindings send and receive commands and status updates on the openHAB event bus. This concept allows designing user interfaces with a unique look&feel, but with the possibility to operate devices based on a big number of different technologies. Besides the user interfaces, it also brings the power of automation logic across different system boundaries.
    Downloads: 4 This Week
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  • 14
    OpenSwing
    OpenSwing is a components library that provides a rich set of advanced graphics components for developing desktop applications and HTTP/RMI based java applications/RIAs based on Swing front-end. It provides also adapters for Hibernate, JPA, iBatis, etc.
    Downloads: 19 This Week
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  • 15
    7-Zip-JBinding

    7-Zip-JBinding

    Java wrapper for 7z archiver engine

    Native (JNI) cross-platform library to extract (password protected, multi-part) 7z Zip Rar Tar Split Lzma Iso HFS GZip Cpio BZip2 Z Arj Chm Lhz Cab Nsis Deb Rpm Wim Udf archives and create 7z, Zip, Tar, GZip & BZip2 from Java.
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    Downloads: 27 This Week
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  • 16
    Agrona

    Agrona

    High Performance data structures and utility methods for Java

    Agrona provides a library of data structures and utility methods that are a common need when building high-performance applications in Java. Many of these utilities are used in the Aeron efficient reliable UDP unicast, multicast, and IPC message transport and provides high-performance buffer implementations to support the Simple Binary Encoding Message Codec.
    Downloads: 3 This Week
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  • 17
    Android Layout Engine

    Android Layout Engine

    A JSON based LayoutInflater for Android

    Proteus is meant to be a drop-in replacement for Android’s LayoutInflater; but unlike the compiled XML layouts bundled in the APK, Proteus inflates layouts at runtime. With Proteus, you can control your Apps layout from the backend (no WebViews). Forget the boilerplate code to findViewById, cast it to a TextView, and then setText(). Proteus has runtime data bindings and formatters. Plugin in your own custom views and attributes and functions to flavour proteus to your requirements.
    Downloads: 3 This Week
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  • 18
    Country Code Picker Library

    Country Code Picker Library

    Search and select country or international phone code

    If you are looking for an Android library for Country Selector or Country Spinner or Country Phone Code selector, this is the perfect place for you. Give a professional touch to your well-designed form like the login screen, sign-up screen, and edit profile screen with CCP. When used as a phone code picker, it helps by removing confusion about how to add the phone number and making the view more understandable. If you prefer experience along with explanations, a demo android app is available that demonstrates all the features of this library.
    Downloads: 3 This Week
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  • 19
    Eclipse Collections

    Eclipse Collections

    Eclipse Collections is a collections framework for Java

    Eclipse Collections is the best Java collections framework ever that brings happiness to your Java development. Integrate it to your codebase today with your favorite build tools! Maximize the power of Java 8 Lambda expressions and method references with rich APIs directly available on your collections. Many container types include immutable collections, primitive collections, bimaps, multimaps and bags. You can make use of various container types, leveraging handy factory methods for instantiation. Eclipse Collections provides a memory-efficient implementation of Sets and Maps as well as primitive collections. Check out the Eclipse Collections Kata, a fun way to help you learn idiomatic Eclipse Collections usage. This particular kata is set up as a series of unit tests that fail. Your task is to make them pass, using Eclipse Collections.
    Downloads: 3 This Week
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  • 20
    Item-NBT-API

    Item-NBT-API

    Add custom NBT tags to Items/Tiles/Entities without NMS

    The NBT API allows you to add custom NBT tags to Itemstacks, TileEntities, and Entities, or modify existing ones. It completely uses reflections to interact with NMS code and works with all the latest versions. On server start the plugin checks all reflections.
    Downloads: 3 This Week
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  • 21
    Jodd

    Jodd

    Jodd! Lightweight, Java, zero dependencies, use what you like

    Jodd is a set of micro-frameworks and developer-friendly tools and utilities. Code-things-done. Great performances. Tiny dependencies. Use what you like. Welcome to the Jodd, a unique, alternative world of Java. You can find here some micro-frameworks and some handy tools. Nothing more, nothing less. The decision which component is promoted is based on the Maven Central Repo statistics. Version v5 contains remaining libraries and frameworks. They are in maintenance mode.
    Downloads: 3 This Week
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  • 22
    Lettuce

    Lettuce

    Advanced Java Redis client for thread-safe sync, async, etc.

    Build elastic data access. Lettuce is a scalable Redis client for building non-blocking Reactive applications. Lettuce is a fully non-blocking Redis client built with netty providing Reactive, Asynchronous and Synchronous Data Access. Lettuce provides asynchronous API with RedisFuture (CompletionStage) and Reactive types Flux [N] and Mono [0|1]. Low-latency communication, backpressure-enabled network engine for NIO TCP, epoll TCP and Unix Domain Sockets. Reactive Streaming is fully supported. Lettuce comes with an API that gets you started quickly. Its simple yet powerful programming model allows you for trivial use-cases as well as for chained asynchronous flows. Redis Standalone, Master/Slave, Redis Sentinel and Redis Cluster. Lettuce connects with all operational models natively supported by Redis. Partition-tolerance, Read Slaves and Transport-Level-Security provide the required foundation for highly scalable applications.
    Downloads: 3 This Week
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  • 23
    Micrometer

    Micrometer

    App observability facade for the most popular observability tools

    Micrometer provides a simple facade over the instrumentation clients for the most popular observability systems, allowing you to instrument your JVM-based application code without vendor lock-in. Think SLF4J, but for observability. Micrometer provides vendor-neutral interfaces for timers, gauges, counters, distribution summaries, and long task timers with a dimensional data model that, when paired with a dimensional monitoring system, allows for efficient access to a particular named metric with the ability to drill down across its dimensions. Out-of-the-box instrumentation of caches, the class loader, garbage collection, processor utilization, thread pools, and more tailored to actionable insight. Micrometer is the instrumentation library powering the delivery of application observability from Spring Boot applications.
    Downloads: 3 This Week
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  • 24
    MyBatis Spring Adapter

    MyBatis Spring Adapter

    Spring integration for MyBatis 3

    MyBatis-Spring adapter is an easy-to-use Spring Framework bridge for MyBatis sql mapping framework. MyBatis-Spring integrates MyBatis seamlessly with Spring. This library allows MyBatis to participate in Spring transactions, takes care of building MyBatis mappers and SqlSessions and inject them into other beans, translates MyBatis exceptions into Spring DataAccessExceptions, and finally, it lets you build your application code free of dependencies on MyBatis, Spring or MyBatis-Spring. Spring version 2 only supports iBATIS version 2. An attempt was made to add MyBatis 3 support into Spring 3 (see the Spring Jira issue. Unfortunately, Spring 3 development ended before MyBatis 3 was officially released. Because the Spring team did not want to release with code based on a non-released version of MyBatis, official Spring support would have to wait.
    Downloads: 3 This Week
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  • 25
    MyBatis integration with Spring Boot

    MyBatis integration with Spring Boot

    MyBatis integration with Spring Boot

    MyBatis Spring-Boot-Starter will help you to use MyBatis with Spring Boot.
    Downloads: 3 This Week
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