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.

  • Skillfully - The future of skills based hiring Icon
    Skillfully - The future of skills based hiring

    Realistic Workplace Simulations that Show Applicant Skills in Action

    Skillfully transforms hiring through AI-powered skill simulations that show you how candidates actually perform before you hire them. Our platform helps companies cut through AI-generated resumes and rehearsed interviews by validating real capabilities in action. Through dynamic job specific simulations and skill-based assessments, companies like Bloomberg and McKinsey have cut screening time by 50% while dramatically improving hire quality.
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  • The Most Powerful Software Platform for EHSQ and ESG Management Icon
    The Most Powerful Software Platform for EHSQ and ESG Management

    Addresses the needs of small businesses and large global organizations with thousands of users in multiple locations.

    Choose from a complete set of software solutions across EHSQ that address all aspects of top performing Environmental, Health and Safety, and Quality management programs.
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  • 1
    Java HTML/XML Compressor is a very small, fast and easy to use library that compresses given HTML or XML source by removing extra whitespaces, comments and other unneeded characters without breaking the content structure.
    Downloads: 3 This Week
    Last Update:
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  • 2

    CobolToCsv

    Convert Cobol Data Files to/From Csv

    This project will convert Cobol Data Files to/From Csv files using a Cobol Copybook.
    Downloads: 5 This Week
    Last Update:
    See Project
  • 3
    This project provides utilities to convert a JavaFX Scene to Swing Graphics2D orders. It it then simple to use it to convert to any format which takes a Graphics2D as input. The project comes with a PowerPoint, a SVG, and an EPS converter.
    Downloads: 5 This Week
    Last Update:
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  • 4
    JVx mobile

    JVx mobile

    JVx for mobile devices

    This project brings JVx applications to mobile devices as real native applications.
    Downloads: 5 This Week
    Last Update:
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  • Deliver trusted data with dbt Icon
    Deliver trusted data with dbt

    dbt Labs empowers data teams to build reliable, governed data pipelines—accelerating analytics and AI initiatives with speed and confidence.

    Data teams use dbt to codify business logic and make it accessible to the entire organization—for use in reporting, ML modeling, and operational workflows.
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  • 5
    JSP tag library for the YAV javascript validation tool. It provides automatic client-side and server-side validation by using simple validation tags.
    Downloads: 5 This Week
    Last Update:
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  • 6
    Jarrunner is a java library to execute external java programs (jar) inside the running JVM (instead of forking a separate one). Additional features are an isolated mode to prevent class loading conflicts and the interception of all System#exit() calls.
    Downloads: 5 This Week
    Last Update:
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  • 7
    threeddonut

    threeddonut

    3D donut. Example of frojasg1.com libraries usage

    The application shows a 3D donut, that can be rotated with two sliders in both axis. It is a simple example of what can be done with frojasg1.com platform libraries: - Zoom option for components - Multi language - Dark mode option - Automatic Undo-Redo for text components, with popup menu included - Text Search/Replace window prepared to be used. - Base components for auto-completion windows. - Automatic component relocation after redimensioning a window. - Base classes for formating text on the fly in JTextPanes - Improved JFileChooser and other functions: - Basic functions of all kind. - Accurate image resizing. - Function to process images. - Classes to easy the xml file management (without validation) - JDK-17 compatibility You will find more about it at this web site: https://www.frojasg1.com:8443/downloads_web/web/html/donut.html?origin=sourceforge
    Downloads: 5 This Week
    Last Update:
    See Project
  • 8
    JACo MP3 Player ( java mp3 player )
    JACo MP3 Player is a cross platform java mp3 player. Features: very low CPU usage (~2%), incredible small library (~90KB), doesn't need JMF, easy to integrate in any application, easy to integrate in any web page (as applet).
    Downloads: 6 This Week
    Last Update:
    See Project
  • 9
    JAAD
    JAAD is an open-source AAC decoder and MP4 demultiplexer library written completely in Java. It is platform-independent and portable.
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    Downloads: 1 This Week
    Last Update:
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  • Jscrambler: Pioneering Client-Side Protection Platform Icon
    Jscrambler: Pioneering Client-Side Protection Platform

    Jscrambler offers an exclusive blend of cutting-edge first-party JavaScript obfuscation and state-of-the-art third-party tag protection.

    Jscrambler is the leader in Client-Side Protection and Compliance. We were the first to merge advanced polymorphic JavaScript obfuscation with fine-grained third-party tag protection in a unified Client-Side Protection and Compliance Platform. Our integrated solution ensures a robust defense against current and emerging client-side cyber threats, data leaks, and IP theft, empowering software development and digital teams to innovate securely. With Jscrambler, businesses adopt a unified, future-proof client-side security policy all while achieving compliance with emerging security standards including PCI DSS v4.0. Trusted by digital leaders worldwide, Jscrambler gives businesses the freedom to innovate securely.
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  • 10
    Jollyday
    This API calculates the holidays for a given year, country and region or lets you provide your own holiday rules. Uses XML files for storing the holiday data. Uses JODA date/time API. Supports Europe, North/South America, Australia, Russia, India ...
    Downloads: 4 This Week
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  • 11
    Calculates Natural Product(NP)-likeness of a molecule, i.e. the similarity of the molecule to the structure space covered by known natural products. NP-likeness is a useful criterion to screen compound libraries and to design new lead compounds. Maven dependancy: <dependency> <groupId>uk.ac.ebi.cheminformatics</groupId> <artifactId>NP-Likeness</artifactId> <version>2.1</version> </dependency> Required repository: <repositories> <repository> <id>ebi-repo</id> <name>EBI maven repository</name> <url>http://www.ebi.ac.uk/~maven/m2repo</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories> Latest version of the project is available here in our GIT repo https://github.com/CS76/NP-Likeness
    Downloads: 4 This Week
    Last Update:
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  • 12
    Reporting engine library written in C. Create one XML file and generate PDF, HTML, TXT, and CSV reports based on queries. Has support for MySQL, PostgreSQL, ODBC. Bindings for PHP, Java, Python.
    Downloads: 4 This Week
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  • 13
    lixa

    lixa

    LIXA, LIbre XA, is a free and open source XA transaction manager

    LIXA (LIbre XA) is an open source and free Transaction Manager implementing the distributed transaction processing "XA specification" and "TX (transaction demarcation) specification" according to the X/Open CAE Specification. LIXA implements even XTA: XA Transaction API, an innovative API that implements XA transactional context passing among different applications. LIXA is a Transaction Manager but it's not a Transaction Monitor: this is the distinguishing feature of the project. LIXA technology enables every application container, like a web server or a shell, to become a two phase commit application server. The client/server architecture of LIXA allows many application containers to share a single LIXA (state) server: this is ideal when horizontal scalability is a must and many identical application containers must refer to a single transactional environment. LIXA can be used with the C, C++, Java, Python and COBOL programming languages.
    Downloads: 4 This Week
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  • 14
    Driver para impresor / controlador fiscal EPSON en JAVA. Utiliza JNI para comunicacion con puerto serie. Testeado en winxp, linux x86_64, win7 32 / 64 sobre TMU-220AF. solo rollo papel continuo (chicos)
    Downloads: 1 This Week
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  • 15
    AndroidRate

    AndroidRate

    Library to help you promote your Android app

    AndroidRate is a library to help you promote your Android app by prompting users to rate the app after using it for a few days.
    Downloads: 2 This Week
    Last Update:
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  • 16
    GeoAPI

    GeoAPI

    Set of Java interfaces for geospatial applications

    The development community in building GIS solutions is sustaining an enormous level of effort. The GeoAPI project aims to reduce duplication and increase interoperability by providing neutral, interface-only APIs derived from OGC/ISO Standards.
    Downloads: 1 This Week
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  • 17

    GeoWeb 3D Globe

    Geospatial Web 3D Globe Project(To consider S.Korea market)

    The goal of "GeoWeb 3D Globe" is developing 3D visualization and utilization module for geospatial data. We are conveniently wide range of developers hope to take advantage of geospatial information. Using three-dimensional spatial information service developed for web-based 3D "GeoWeb 3D Globe" The main contents of the project are as follows: 1. Based on proven open source SW(WWJava) 2. Specializing in 3D visualization of geospatial data 3. Web based service
    Downloads: 1 This Week
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  • 18
    OpenXLS is the open source version of ExtenXLS -- a best-in-class Java spreadsheet SDK that allows you to read, modify and create Excel-compatible spreadsheets from your Java applications. Supports Excel 97-2012 file formats.
    Downloads: 1 This Week
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  • 19
    openPDF
    openPDF is based on a several open source software products, such as iText, JPedal, CryptoApplet among others. Allow users to view/modify PDF documents and forms, barcodes generation, data extraction and signature validation.
    Downloads: 2 This Week
    Last Update:
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  • 20
    JDAL (Java Database Application Library)

    JDAL (Java Database Application Library)

    Java data access and swing binding library

    JDAL is a Java library that aims to help developers making database applications easily using Spring Framework and Hibernate, JPA or IBatis ORMs. Support generic DAOs and ready to use UI Components with server side pagination and sorting.
    Downloads: 3 This Week
    Last Update:
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  • 21
    Microproperties is a flexible and extensible library for dealing with properties in applications written in Java ME (former J2ME). Read properties from MIDlet Manifest/JAD, a textfile or over internet via a URL. Set properties as never before in Java ME.
    Downloads: 3 This Week
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  • 22
    A Java library for creation and editing of several playlist formats.
    Downloads: 3 This Week
    Last Update:
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  • 23
    jni4net

    jni4net

    Fast, object oriented, intraprocess bridge between JVM and CLR

    Fast, object oriented, intraprocess bridge between JVM and CLR
    Downloads: 3 This Week
    Last Update:
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  • 24
    silvertunnel - Java lib+browser for TOR
    silvertunnel.org is a project that provides an end-user browser, a Java library and additional Java security tools to easily access anonymity networks such as the Tor (torproject.org) network. Secure and easy to use. Tor4Java and Tor Browser. Attention: see project status on page https://sourceforge.net/p/silvertunnel/discussion/962278/thread/83dc2d02/#
    Downloads: 1 This Week
    Last Update:
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  • 25
    ANNJ, Another Neural Network for Java is a neural network framework for the Java programming language. It is still in an early development stage, currently supporting only feed-forward type networks, but will soon be able to handle many other types.
    Downloads: 2 This Week
    Last Update:
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