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.

  • Cut Data Warehouse Costs by 54% Icon
    Cut Data Warehouse Costs by 54%

    Easily migrate from Snowflake, Redshift, or Databricks with free tools.

    BigQuery delivers 54% lower TCO with exabyte scale and flexible pricing. Free migration tools handle the SQL translation automatically.
    Try Free
  • Host LLMs in Production With On-Demand GPUs Icon
    Host LLMs in Production With On-Demand GPUs

    NVIDIA L4 GPUs. 5-second cold starts. Scale to zero when idle.

    Deploy your model, get an endpoint, pay only for compute time. No GPU provisioning or infrastructure management required.
    Try Free
  • 1
    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: 11 This Week
    Last Update:
    See Project
  • 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: 17 This Week
    Last Update:
    See Project
  • 3
    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: 2 This Week
    Last Update:
    See Project
  • 4
    Nomulus

    Nomulus

    Top-level domain name registry service on Google Cloud Platform

    Nomulus is a production-grade, open-source domain registry platform used to operate top-level domains (TLDs). It implements the core registry protocols—EPP for registrar interactions, WHOIS/RDAP for public data access—and manages the lifecycle of domain objects, hosts, and contacts. The system is built to scale and to enforce policy: pricing rules, reserved names, premium tiers, grace periods, and automated renewals are modeled explicitly. It integrates with DNS provisioning, data escrow, and billing so you can run a compliant registry end-to-end rather than stitching together separate services. Operators get admin tools for reporting, manual adjustments, and policy configuration, while registrars interact through standards-compliant channels. Nomulus treats registries as serious infrastructure: audited flows, durable storage, and clear extension points for custom policies and TLD-specific behavior.
    Downloads: 2 This Week
    Last Update:
    See Project
  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
    Start Free
  • 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
    Last Update:
    See Project
  • 6
    JavAjax is now at 1.4 beta version, for downloads and documentation please visit http://www.javajax.org
    Downloads: 39 This Week
    Last Update:
    See Project
  • 7
    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: 7 This Week
    Last Update:
    See Project
  • 8
    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: 6 This Week
    Last Update:
    See Project
  • 9
    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.
    Leader badge
    Downloads: 36 This Week
    Last Update:
    See Project
  • AI-generated apps that pass security review Icon
    AI-generated apps that pass security review

    Stop waiting on engineering. Build production-ready internal tools with AI—on your company data, in your cloud.

    Retool lets you generate dashboards, admin panels, and workflows directly on your data. Type something like “Build me a revenue dashboard on my Stripe data” and get a working app with security, permissions, and compliance built in from day one. Whether on our cloud or self-hosted, create the internal software your team needs without compromising enterprise standards or control.
    Try Retool free
  • 10
    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)
    Leader badge
    Downloads: 27 This Week
    Last Update:
    See Project
  • 11
    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: 1 This Week
    Last Update:
    See Project
  • 12
    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: 2 This Week
    Last Update:
    See Project
  • 13
    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: 2 This Week
    Last Update:
    See Project
  • 14
    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: 9 This Week
    Last Update:
    See Project
  • 15
    A P2P overlay construction toolkit, which supports routing algorithm researchers in addition to application developers. It provides multiple routing (DHT) algorithms such as Chord, Kademlia, Koorde, Pastry and Tapestry, and a distributed environment emu
    Downloads: 6 This Week
    Last Update:
    See Project
  • 16
    Downloads: 4 This Week
    Last Update:
    See Project
  • 17
    Tpl makes it easy to serialize your C data using just a handful of API functions. The data is stored in its native binary form for maximum efficiency. C, Perl and XML supported. Data is portable across CPU types and OS's from Unix to Mac to Windows.
    Leader badge
    Downloads: 4 This Week
    Last Update:
    See Project
  • 18
    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
    Last Update:
    See Project
  • 19
    Metl ETL Data Integration

    Metl ETL Data Integration

    Simple message-based, web-based ETL integration

    Metl is a simple, web-based ETL tool that allows for data integrations including database, files, messaging, and web services. Supports RDBMS, SOAP, HTTP, FTP, SFTP, XML, FIXLEN, CSV, JSON, ZIP, and more. Metl implements scheduled integration tasks without the need for custom coding or heavy infrastructure. It can be deployed in the cloud or in an internal data center, and it was built to allow developers to extend it with custom components.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 20
    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: 3 This Week
    Last Update:
    See Project
  • 21
    XAware Data Integration Project

    XAware Data Integration Project

    Create XML and JSON data services from any data source

    Create services to integrate applications & move data of any type. Build data views across DBMS, SOAP, HTTP/REST, Salesforce, SAP, Microsoft, SharePoint, Text, LDAP, FTP sources to read, write & transfer data. Eclipse designer & run-time engine.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 22
    Simple J2EE webapp that acts as a SOAP proxy, validating XML content of incoming requests and outgoing responses. Configure : add your configuration dynamically from a simple page. Check : display the last results of transiting SOAP messages.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23

    WSDLComparator

    WSDL Comparator compares two different wsdl files and gives a report

    WSDL Comparator compares two different wsdl files and gives a report This is the initial release of the WSDL comparator. The WSDL comparator compares two WSDL files with related XSD files in depth.It analyzed if the WSDL files are backward compatible or not. The comparison results could be view in the application itself and in a HTML view.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 24
    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: 2 This Week
    Last Update:
    See Project
  • 25
    FeedTurtle
    RSS reader, multimedia manager and TV series manager
    Downloads: 1 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next
MongoDB Logo MongoDB