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

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    Build gen AI apps with an all-in-one modern database: MongoDB Atlas

    MongoDB Atlas provides built-in vector search and a flexible document model so developers can build, scale, and run gen AI apps without stitching together multiple databases. From LLM integration to semantic search, Atlas simplifies your AI architecture—and it’s free to get started.
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  • Secure remote access solution to your private network, in the cloud or on-prem. Icon
    Secure remote access solution to your private network, in the cloud or on-prem.

    Deliver secure remote access with OpenVPN.

    OpenVPN is here to bring simple, flexible, and cost-effective secure remote access to companies of all sizes, regardless of where their resources are located.
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  • 1
    ZK - Simply Ajax and Mobile
    ZK is an open-source Java framework for building modern web and mobile applications. It enables developers to create rich, interactive UIs using only Java — no JavaScript required. With 200+ Ajax-powered components, event-driven architecture, and support for popular technologies like Spring, Java EE, and JSP/JSF, ZK makes it simple to deliver powerful and user-friendly web applications.
    Downloads: 23 This Week
    Last Update:
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  • 2
    Apache Guacamole

    Apache Guacamole

    HTML5 Clientless Remote Desktop

    Apache Guacamole is a clientless remote desktop gateway. It supports standard protocols like VNC, RDP, and SSH. We call it clientless because no plugins or client software are required. Thanks to HTML5, once Guacamole is installed on a server, all you need to access your desktops is a web browser.
    Downloads: 14 This Week
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  • 3
    Sentinel

    Sentinel

    Lightweight, powerful flow control component

    Sentinel is a powerful flow control component that ensures the reliability and monitoring of microservices by taking “flow” as the breakthrough point. It covers multiple fields including flow control, concurrency limiting, circuit breaking, and adaptive system protection.
    Downloads: 3 This Week
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  • 4
    HelloNzb

    HelloNzb

    The Binary Usenet Tool

    With HelloNzb you can download (binary) files from Usenet servers via NZB index files. The software is based on Java and can thus run on many platforms (tested on Windows and Linux). Automatic archive verification via PAR2, automatic RAR archive extraction, built-in yEnc- and UU-decoding. Portable, no installation required.
    Downloads: 13 This Week
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  • No-Nonsense Code-to-Cloud Security for Devs | Aikido Icon
    No-Nonsense Code-to-Cloud Security for Devs | Aikido

    Connect your GitHub, GitLab, Bitbucket, or Azure DevOps account to start scanning your repos for free.

    Aikido provides a unified security platform for developers, combining 12 powerful scans like SAST, DAST, and CSPM. AI-driven AutoFix and AutoTriage streamline vulnerability management, while runtime protection blocks attacks.
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  • 5
    Zuul

    Zuul

    Gateway service providing dynamic routing, monitoring and more

    Zuul is an L7 application gateway that offers many capabilities, including dynamic routing, monitoring, security, resiliency and more. It is used in the backend of the Netflix streaming service as a front door for all requests from devices and web sites. Zuul is ideal for cases like this where API traffic volume and diversity can become overwhelming and cause production issues to arise suddenly and without warning. Zuul has a broad range of filters that enable it to perform multiple functions quickly and apply functionality to services like Netflix. These functions include security authentication, dynamic routing, stress testing, load shedding and more.
    Downloads: 2 This Week
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  • 6
    crawler4j

    crawler4j

    Open source web crawler for Java

    crawler4j is an open source web crawler for Java which provides a simple interface for crawling the Web. Using it, you can setup a multi-threaded web crawler in few minutes. You need to create a crawler class that extends WebCrawler. This class decides which URLs should be crawled and handles the downloaded page. shouldVisit function decides whether the given URL should be crawled or not. In the above example, this example is not allowing .css, .js and media files and only allows pages within ics domain. visit function is called after the content of a URL is downloaded successfully. You can easily get the url, text, links, html, and unique id of the downloaded page. You should also implement a controller class which specifies the seeds of the crawl, the folder in which intermediate crawl data should be stored and the number of concurrent threads.
    Downloads: 2 This Week
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  • 7
    GeoWebCache

    GeoWebCache

    GWC is a tile server and caching proxy written in Java

    GeoWebCache is a WMS tile cache that lets you serve cached map data to WMS clients, Goole Earth, Google Maps and MS Virtual Earth. The system is pluggable on both ends and does automatic matching to the best available tile. It is very fast and scalable.
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    Downloads: 42 This Week
    Last Update:
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  • 8
    Java JWT

    Java JWT

    Java implementation of JSON Web Token (JWT)

    A Java implementation of JSON Web Token (JWT) - RFC 7519. This library requires Java 8 or higher. The last version that supported Java 7 was 3.11.0. The library implements JWT Verification and Signing using several algorithms. The Algorithm defines how a token is signed and verified. It can be instantiated with the raw value of the secret in the case of HMAC algorithms, or the key pairs or KeyProvider in the case of RSA and ECDSA algorithms. Once created, the instance is reusable for token signing and verification operations. When using RSA or ECDSA algorithms and you just need to sign JWTs you can avoid specifying a Public Key by passing a null value. The same can be done with the Private Key when you just need to verify JWTs.
    Downloads: 1 This Week
    Last Update:
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  • 9
    OpenVPN ALS is a web-based SSL VPN server written in Java. It has a browser-based AJAX UI which allows easy access to intranet services. OpenVPN ALS is a direct descendant of Adito, which was a fork of SSL-Explorer.
    Downloads: 5 This Week
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  • Photo and Video Editing APIs and SDKs Icon
    Photo and Video Editing APIs and SDKs

    Trusted by 150 million+ creators and businesses globally

    Unlock Picsart's full editing suite by embedding our Editor SDK directly into your platform. Offer your users the power of a full design suite without leaving your site.
    Learn More
  • 10
    SoapUI
    The SoapUI download has moved to https://www.soapui.org/downloads/soapui/source-forge.html With more than 9 million downloads SoapUI is the de-facto standard for REST and SOAP API functional, security and performance testing.
    Downloads: 4 This Week
    Last Update:
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  • 11
    MActor is an extensible tool for functional integration testing. It can facilitate tests a range of integration technologies (support for JMS, XML over HTTP, SOAP, TIBCO Rv, IBM MQ series and file-shares are currently supplied with the tool)
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    Downloads: 12 This Week
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  • 12
    RSS Reader is a mobile J2ME (Java ME) app. that runs on Java enabled phones. User can store multiple RSS/ATOM feeds as bookmarks. Can import from OPLM file or HTML file with links. Can read offline. MIDP 2.0/some MIDP 1.0. Specify which MIDP w/issue
    Downloads: 5 This Week
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  • 13
    S-FENG stands for Semantic-FEderation Next Generation. S-FENG represents the solution for managing federation of registries with its related aspects: affiliation, promotion, semantic publication and discovery, according to UDDI 3.0.2 specifications.
    Downloads: 3 This Week
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  • 14
    EXIficient
    NOTE: we moved to http://exificient.github.io !!! The Efficient XML Interchange (EXI) format is a very compact representation for the Extensible Markup Language (XML) Information Set that is intended to simultaneously optimize performance and the utilization of computational resources. Besides the EXI library EXIficient provides a command-line interface (CLI, see com.siemens.ct.exi.cmd.EXIficientCMD) and a graphical user interface (GUI, see http://exificient.sourceforge.net/exificient.jnlp)
    Downloads: 2 This Week
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  • 15
    mendelson AS4

    mendelson AS4

    AS4 Solution for ENTSOG, e-SENS, ebMS, PEPPOL, ICS2, BDEW

    mendelson AS4 is a free JAVA-based open source AS4 solution. Contains a monitoring- and configuration GUI (SWING), supports PUSH and PULL messages, ENTSOG AS4, e-SENS AS4, ebMS AS4, BDEW AS4, PEPPOL AS4, ICS2 AS4, signatures (SOAP, payload), selectable profile per trading partner, encryption (SOAP, payload), UserNameToken, TLS, pluggable into any servlet container, trading partner management, compression, certificate management
    Downloads: 5 This Week
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  • 16
    JMEDS (Java Multi Edition DPWS Stack)

    JMEDS (Java Multi Edition DPWS Stack)

    JMEDS is a lightweight, modular extendable Java Framework for DPWS.

    JMEDS is a lightweight, modular and extendable software framework for using the "Devices Profile for Web-Services (DPWS)" in Java based environments. It runs on Java CLDC (e.g. on embedded devices), CDC, Android and SE platforms. 12.02.2014 v2.0.0 beta 10 fixed the EXI release and included schema files for EXI's schema informed mode, multiple other bug fixes 25.09.2013 Bugfix release of JMEDS Framework: v2.0.0 beta 9a 30.08.2013 v2.0.0 beta 9 New version of JMEDS Framework We are doing our best to answer all questions from you and fix the bugs that are found as fast as we can! So don't hesitate to ask questions or report unexpected behaviour/bugs that you might find. DPWS Explorer released on http://ws4d.e-technik.uni-rostock.de/dpws-explorer/
    Downloads: 1 This Week
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  • 17
    Opal Toolkit
    Opal is a toolkit for wrapping scientific applications as Web services on Cluster, Grid and Cloud resources with ease. Users may access these software as a service using simple Web service APIs from their custom application and workflow environment.
    Downloads: 2 This Week
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  • 18
    WebLOAD
    This project is intended for ISVs, SIs and software developers who need to integrate load generation engine into their applications. For enterprise load and performance testing initiatives, RadView offers WebLOAD Professional, a complete solution for creating, executing and analyzing the performance of web applications under load.
    Downloads: 3 This Week
    Last Update:
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  • 19
    Galleon is a home media server using TiVo's discontinued HME protocol. It only works on TiVo versions earlier than 20.7.2. The project is not actively maintained. If you want to maintain it, contact the admins.
    Downloads: 1 This Week
    Last Update:
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  • 20
    An XML-RPC library for Java built on the NIO libraries, with minimal external dependencies.
    Downloads: 2 This Week
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  • 21
    TCPMonPlus

    TCPMonPlus

    TCPMonPlus intercepts TCP packets and SOAP reqeusts

    TcpMonPlus version 1.0: A Utility Application to Monitor TCP Packets This utility application can be used to monitor the packets flowing on a TCP connection. TcpMonPlus is used by placing it in-between a client and a server. The client is configured to connect to TcpMonPlus and TcpMonPlus forwards the packets to server with all required authentications. The client must be configured to TcpMonPlus local Port that is it is listening to. TcpMonPlus forwards the packets to the server and port specified in the configuration panel. User Name and Password may be supplied if the server requires HTTP authentication. NOTE: You can run the application in console mode using the following example command: java -cp . com.yasmoicoco.proxy.tcpmon.TCPMonitorPlus -console 9080 192.168.1.1 9080 true Using the scripts: Or You may execute one of the scripts as follows: Windows: TCPMonPlus.bat TCPMonPlusConsole.bat Non Windows: TCPMonPlus.sh TCPMonPlusConsole.sh Also known as TCPMon
    Downloads: 2 This Week
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  • 22
    Dojo Faces is a set of JavaServerFaces components based on the widgets of the Dojo Javascript toolkit. It offers dynamic, AJAX ready user interface components for JSF based web applications.
    Downloads: 1 This Week
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  • 23
    Identityflow provides a framework for building protocol flows that perform distributed Identity operations. Examples of Identity Operations are Single Sign-On (SSO) and Attribute queries.
    Downloads: 1 This Week
    Last Update:
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  • 24

    AjaxToaster

    Servlet framework for creating standalone restful CRUD services

    AjaxToaster is built on XMLToaster and inspired by the "guerrilla SOA" philosphy. You can use it to quickly create RESTful JSON & XML based CRUD services for your web applications by writing short scripts. It is downloadable as a windows installer package for quick no-hassle setup. It runs as a servlet in an app-server. By default it sets itself up to run inside its own standalone (jetty) server. Code contributions most welcome!
    Downloads: 1 This Week
    Last Update:
    See Project
  • 25
    ClinicWeb is a complete Health Information System (EHR - Electronic Health Medical Record); it access MySQL Database over Internet or local network; developed in Java - © 2008 - UNIFESP / Paulo Salomao, Amilton Martha, Carlos J R Campos, Daniel Sigulem
    Downloads: 1 This Week
    Last Update:
    See Project
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