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

  • Find Hidden Risks in Windows Task Scheduler Icon
    Find Hidden Risks in Windows Task Scheduler

    Free diagnostic script reveals configuration issues, error patterns, and security risks. Instant HTML report.

    Windows Task Scheduler might be hiding critical failures. Download the free JAMS diagnostic tool to uncover problems before they impact production—get a color-coded risk report with clear remediation steps in minutes.
    Download Free Tool
  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
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  • 1
    Angry IP Scanner

    Angry IP Scanner

    A cross-platform network scanner that is fast and simple to use

    Angry IP scanner is fast and friendly network scanner for Windows, Linux, and Mac. It is very extensible, allowing it to be used for very wide range of purposes, with the primary goal of being useful to network administrators.
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    Downloads: 2,853 This Week
    Last Update:
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  • 2
    WFDownloader App

    WFDownloader App

    Free batch downloader for image, wallpaper, video, audio, document,

    Use as an image gallery, wallpaper, audio/music, video, document, and other media bulk downloader from supported websites. Also use to download sequential website urls that have a certain pattern (e.g. image01.png to image100.png). Also use app's built-in site crawler for advanced link search or extraction. There is also special support for forum media and open directory downloading. It's a programmable downloader and also works with password protected sites. Say goodbye to downloading one by one. Go to the Help menu or check out website to get started. Note that this cross-platform version requires Java (minimum version Java 8) to be installed on your Operating System. For non-java required OS specific versions, check app's website.
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    Downloads: 263 This Week
    Last Update:
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  • 3
    FreeWRL VRML/X3D browser
    FreeWRL is an Open Source, cross platform VRML2 and X3D compliant browser, with script, SAI and EAI support. Platforms supported: Linux and other Unix-style platforms; Mac OS/X; Windows. Support for mobile platforms (iOS, Android, QNX) is under development.
    Leader badge
    Downloads: 127 This Week
    Last Update:
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  • 4
    Google2SRT

    Google2SRT

    Download, save and convert multiple subtitles from YouTube videos

    Google2SRT allows you to download, save and convert multiple subtitles and translations from YouTube and Google Video to SubRip (.srt) format, which is recognized by most video players. You can download XML subtitles or simply type video's URL, Google2SRT will do the rest.
    Downloads: 79 This Week
    Last Update:
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  • Atera - The depth of a full-stack IT platform, with the power of AI. Icon
    Atera - The depth of a full-stack IT platform, with the power of AI.

    Atera introduces your autonomous AI agent - Ensure operational efficiency at any scale with 24/7 autonomous IT support.

    Atera prioritizes security and compliance through robust protections that align with industry standards. Our AI-driven features were built on responsible AI principles and empower IT teams to work efficiently while maintaining trust and compliance.
    Learn More
  • 5
    iText®, a JAVA PDF library

    iText®, a JAVA PDF library

    PDF Library for Developers

    iText is an open-source PDF library available for Java and .NET (C#). iText allows you to effortlessly generate and manipulate standards-compliant PDF documents with a powerful and feature-rich SDK. With iText, you can create archivable and accessible PDFs, split and merge documents, fill and flatten forms, digitally sign documents, and more. iText add-ons enable additional functionality, such as PDF creation from HTML templates, secure redaction, OCR, and much more. The latest versions of iText build on the success of previous versions and feature an improved document engine, high and low-level programming capabilities, and a more efficient modular structure. iText represents the next level for developers looking to leverage PDF in document workflows. The main project page for iText is now on GitHub, and all the latest releases, code samples, open source add-ons and tools, etc. can be found at https://github.com/itext/.
    Leader badge
    Downloads: 182 This Week
    Last Update:
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  • 6
    FullSync

    FullSync

    Easy file synchronization for everyone

    FullSync is a powerful tool that helps you keep multiple copies of various data in sync. I.e. it can update your Website using (S)Ftp, backup your data or refresh a working copy from a remote server. It offers flexible rules, a scheduler and more
    Downloads: 24 This Week
    Last Update:
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  • 7
    P2PVPN
    P2PVPN is an easy to use VPN-Software. Users will be connected trough a P2P network, so no server is required.
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    Downloads: 47 This Week
    Last Update:
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  • 8
    CSSBox

    CSSBox

    Pure Java HTML / CSS rendering engine

    CSSBox is an (X)HTML/CSS rendering engine written in pure Java. Its primary purpose is to provide a complete information about the rendered page suitable for further processing. However, it also allows displaying the rendered document.
    Downloads: 30 This Week
    Last Update:
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  • 9
    GDownloader is a download manager, that will allow to resume paused or aborted downloads, download from multiple locations, and manage multiples downloads (priorities, schedule, etc) among other features. It's developed in Java to provide portability
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    Downloads: 79 This Week
    Last Update:
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  • The complete IT asset and license management platform Icon
    The complete IT asset and license management platform

    Gain full visibility and control over your IT assets, licenses, usage and spend in one place with Setyl.

    The platform seamlessly integrates with 100+ IT systems, including MDM, RMM, IDP, SSO, HR, finance, helpdesk tools, and more.
    Learn More
  • 10
    xowa

    xowa

    A free, open-source, offline Wikipedia application

    XOWA is a desktop application for reading and editing Wikipedia offline (XOWA has moved to http://gnosygnu.github.io/xowa/download.html)
    Downloads: 14 This Week
    Last Update:
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  • 11
    XDM

    XDM

    The Fork of Orginal XDM, The Best Open Source Download Manager

    The fork of Xtereme Download manager that it's page is in https://sourceforge.net/projects/xdman/?source=directory, has more features, for some informations go to http://ubuntuone.com/3dvE3Z0ZC8H1sBCca9zqpv Brought you by Subhra Das Gupta and Ali Torabi . Please use orginal and the forked to compare both
    Leader badge
    Downloads: 14 This Week
    Last Update:
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  • 12
    Early Access iText, a PDF generation library in Java
    Downloads: 26 This Week
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  • 13
    The Open Web Application Security Project (OWASP) software and documentation repository.
    Downloads: 11 This Week
    Last Update:
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  • 14
    A collection of open source and public domain software for Java, XML, and Cocoa, primarily. Some projects: ThreadWorker, Xmlizable, Base64, Tabu Search.
    Downloads: 10 This Week
    Last Update:
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  • 15
    The archive-crawler project is building Heritrix: a flexible, extensible, robust, and scalable web crawler capable of fetching, archiving, and analyzing the full diversity and breadth of internet-accesible content.
    Downloads: 7 This Week
    Last Update:
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  • 16
    WebHarvest - web data extraction tool
    Web data extraction (web data mining, web scraping) tool. It leverages well proved XML and text processing techologies in order to easely extract useful data from arbitrary web pages.
    Downloads: 9 This Week
    Last Update:
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  • 17
    OpenSearchServer Search Engine

    OpenSearchServer Search Engine

    An open source search engine with RESTFul API and crawlers

    OpenSearchServer is a powerful, enterprise-class, search engine program. Using the web user interface, the crawlers (web, file, database, etc.) and the client libraries (REST/API , Ruby, Rails, Node.js, PHP, Perl) you will be able to integrate quickly and easily advanced full-text search capabilities in your application: Full-text with basic semantic, join queries, boolean queries, facet and filter, document (PDF, Office, etc.) indexation, web scrapping,etc. OpenSearchServer runs on Windows and Linux/Unix/BSD.
    Downloads: 5 This Week
    Last Update:
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  • 18
    Winstone is a Java servlet container (spec v2.5) that aims at being light, fast and reliable. It requires no configuration files, and is extremely simple to use.
    Downloads: 6 This Week
    Last Update:
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  • 19
    A torrent search engine plugin for the Azureus/Vuze bittorrent platform.
    Leader badge
    Downloads: 28 This Week
    Last Update:
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  • 20
    Command line application written in Java useful for automation of downloading process and filtering contents of downloaded files. jDownloader uses simple script file to configure downloading and filtering processes.
    Downloads: 27 This Week
    Last Update:
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  • 21
    Il nuovo sistema di gestione documentale italiano, nativamente integrato con funzioni di protocollo, workflow e conservazione sostitutiva.
    Downloads: 7 This Week
    Last Update:
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  • 22
    JFtp is a graphical network browser. It supports various types of connections like FTP, SMB, SFTP, NFS, HTTP and local ones, has a nice Swing GUI, lots of features and can be started & (auto)updated using Java Web Start in any browser (link on homepage.)
    Downloads: 5 This Week
    Last Update:
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  • 23
    PDF Clown

    PDF Clown

    General-Purpose PDF Library for Java and .NET

    PDF Clown is a general-purpose Java and .NET library for manipulating PDF files through multiple abstraction layers, rigorously adhering to PDF 1.7 specification (ISO 32000-1). This project aims to provide a universal access to PDF files (creation, reading, editing, rendering...) through an accurate and elegant object-oriented API. * Features: http://pdfclown.org/overview/features/ * Overview: http://pdfclown.org/overview/architecture/ * Website: http://pdfclown.org/ * Blog: http://www.pdfclown.org/blog/ * Twitter: https://twitter.com/PDFClown
    Downloads: 5 This Week
    Last Update:
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  • 24
    Lobo is an extensible all-Java web browser and RIA platform. It supports HTML 4, Javascript (AJAX) and CSS 2 plus direct JavaFX and Java (Swing/AWT) rendering. Cobra is the web browser's renderer API; also a Javascript-aware HTML parser.
    Downloads: 4 This Week
    Last Update:
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  • 25
    MeanOS

    MeanOS

    The smallest and the most powerful operating system.

    The first decentralized, artificially intelligent, MEAN.js stack, operating system. Mean OS is the only operating system hosted anonymous using a P2P network and a suite of non-standard in-browser delivery mechanisms. Mean OS is specifically designed to support both Brave and Tor but is compatible with all other major browsers. Mean OS is Proud to be a BRAVE and TOR supporter, be free!!
    Downloads: 8 This Week
    Last Update:
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