Browse free open source Protocols and projects below. Use the toggles on the left to filter open source 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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  • Level Up Your Cyber Defense with External Threat Management Icon
    Level Up Your Cyber Defense with External Threat Management

    See every risk before it hits. From exposed data to dark web chatter. All in one unified view.

    Move beyond alerts. Gain full visibility, context, and control over your external attack surface to stay ahead of every threat.
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  • 1
    Phusion Passenger

    Phusion Passenger

    A fast and robust web server and application server for Ruby

    Passenger® is an app server that runs and automanages your web apps with ease. Also improves security, reliability and scalability. Passenger 6 introduces standardization across your stack by supporting all languages. From business-critical apps with billions of requests per day to small side projects, Passenger is tailored for each scenario. Passenger has a myriad of features that are invaluable to today’s web apps and microservice APIs. You get these benefits (and more) by simply installing Passenger with Nginx or Apache. Passenger was built with high performance and efficiency in mind. With Passenger’s zero-copy architecture, turbocaching and support for multiple concurrency models, you can count on Passenger to get the most out of your hardware. Passenger auto-manages your apps’ processes, restarting them and themselves if they ever crash. Passenger also keeps resource-hogging apps in check, giving your web app maximum uptime.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 2
    MultiXTpm Application Server is FREE SOFTWARE, It is a Message Oriented Middleware (MOM) and Transaction Processing (TP) Monitor. It provides the runtime environment and rich API for developing large, scalable distributed applications for OLTP.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 3
    Devolia Geo
    Devolia Geo is a RPC (Remote Procedure Call) service offering user geolocation (i.e. the service returns the closest city and country names from latitude and longitude or IP address).
    Downloads: 0 This Week
    Last Update:
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  • 4
    DCF is based on ACE,it provides a optional Name-Service for locating service, a single interface for both client and server. Anyone can embed DCF in a program to implement communication easily.
    Downloads: 0 This Week
    Last Update:
    See Project
  • The All-in-One Commerce Platform for Businesses - Shopify Icon
    The All-in-One Commerce Platform for Businesses - Shopify

    Shopify offers plans for anyone that wants to sell products online and build an ecommerce store, small to mid-sized businesses as well as enterprise

    Shopify is a leading all-in-one commerce platform that enables businesses to start, build, and grow their online and physical stores. It offers tools to create customized websites, manage inventory, process payments, and sell across multiple channels including online, in-person, wholesale, and global markets. The platform includes integrated marketing tools, analytics, and customer engagement features to help merchants reach and retain customers. Shopify supports thousands of third-party apps and offers developer-friendly APIs for custom solutions. With world-class checkout technology, Shopify powers over 150 million high-intent shoppers worldwide. Its reliable, scalable infrastructure ensures fast performance and seamless operations at any business size.
    Learn More
  • 5
    A java framework for developing applications that aggregate data from different sources and combines their responses.It can be used for developing web mashups or as a lightweight enterprise service bus (ESB) in service oriented architectures (SOA).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 6
    Warning: It has be 5 years since this project was completed. PhpBB3 has probably moved on and this is no longer actively tested. Use at your own risk. There is a ticket system if you see issues. Naruto is a web service that makes web site and application integration with message boards much easier and even allows the message board to be remotely hosted. Supported message boards include PhpBB3.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 7
    Is a replicator system writing in python for heterogeneous databases.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 8
    RTAI-XML
    RTAI-XML is a server component of the Real Time Application Interface (RTAI) project, implementing a service oriented way to design and develop Real Time (RT) control applications.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    Sentinel is a task runner. Task can be executed in a cron style scheduler. A SOAP server allows tasks execution from a SOAP client. Other task execution methods are on planning.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Simple, Secure Domain Registration Icon
    Simple, Secure Domain Registration

    Get your domain at wholesale price. Cloudflare offers simple, secure registration with no markups, plus free DNS, CDN, and SSL integration.

    Register or renew your domain and pay only what we pay. No markups, hidden fees, or surprise add-ons. Choose from over 400 TLDs (.com, .ai, .dev). Every domain is integrated with Cloudflare's industry-leading DNS, CDN, and free SSL to make your site faster and more secure. Simple, secure, at-cost domain registration.
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  • 10
    TinyJEE is a zero conf, zero maintenance embeddable platform that has the major goal make the usage of JEE as easy as working with GRAILS while following a component oriented approach with minimized dependencies and main focus on POJO and Java config
    Downloads: 0 This Week
    Last Update:
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  • 11
    Web Objects in XML (Framework) is an interoperable and lightweight system for distributed objects. It is currently built in Java and C#. Remote objects are serialized in a standard XML format, and they are accessible trough their own URL.
    Downloads: 0 This Week
    Last Update:
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  • 12
    Apache 2 module that changes apache into powerful RPC server. Module provides interface to other modules to create remote methods. Module implements xml-rpc and fast-rpc (specification: http://fastrpc.sourceforge.net/?page=manual&sub=spec).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    tinyREST

    tinyREST

    Small Java based REST server

    TinyREST allows a Java programmer to easily create a REST server without having to install a J2EE server. Creating a new server is as easy as copying the service jar, setting up a configuration file and writing your own service handler class. The resulting project can be made to start up as a service. Annotations can now be used to write handler class and methods. JDBC database access as well as file system access is allowed from the service.
    Downloads: 0 This Week
    Last Update:
    See Project
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