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

  • Build AI Apps with Gemini 3 on Vertex AI Icon
    Build AI Apps with Gemini 3 on Vertex AI

    Access Google’s most capable multimodal models. Train, test, and deploy AI with 200+ foundation models on one platform.

    Vertex AI gives developers access to Gemini 3—Google’s most advanced reasoning and coding model—plus 200+ foundation models including Claude, Llama, and Gemma. Build generative AI apps with Vertex AI Studio, customize with fine-tuning, and deploy to production with enterprise-grade MLOps. New customers get $300 in free credits.
    Try Vertex AI Free
  • 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
  • 1
    Portable and very simple C API functions to write a soap client/server in c.
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    Downloads: 146 This Week
    Last Update:
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  • 2
    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: 3 This Week
    Last Update:
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  • 3
    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: 3 This Week
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  • 4
    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: 9 This Week
    Last Update:
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  • Managed MySQL, PostgreSQL, and SQL Databases on Google Cloud Icon
    Managed MySQL, PostgreSQL, and SQL Databases on Google Cloud

    Get back to your application and leave the database to us. Cloud SQL automatically handles backups, replication, and scaling.

    Cloud SQL is a fully managed relational database for MySQL, PostgreSQL, and SQL Server. We handle patching, backups, replication, encryption, and failover—so you can focus on your app. Migrate from on-prem or other clouds with free Database Migration Service. IDC found customers achieved 246% ROI. New customers get $300 in credits plus a 30-day free trial.
    Try Cloud SQL Free
  • 5
    CyBerFuN xBTiT
    CyBerFuN xBTiT by cybernet2u / I only install hacks and maintain them / all the credits for the core source goes to : http://www.btiteam.org new files here ->https://github.com/cybyd/cybyd
    Downloads: 4 This Week
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  • 6
    The goal of this project is to produce a light weight C++ SOAP client library. Longer term support for WSDL.
    Downloads: 2 This Week
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  • 7
    wsdlpull is an efficient and powerful command line utility for dynamic inspection and invocation of WSDL web services.It provides a C++ library with dynamic WSDL invocation API,WSDL parser,Schema parser and Validator and an xmlpull Parser/Serializer.
    Downloads: 1 This Week
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  • 8
    Fronsetia

    Fronsetia

    A web application for testing webservices

    Fronsetia (Free Online Service Testing Application) is a Java web application that allows testing webservices (REST and SOAP). No end-user installations required, just deploy the application on your server and pass the link so that users can use their usual browsers to access Fronsetia. You can think of Fronsetia as a simple version of SoapUI on the web, or a simple and free and open-source version of the "wls_utc" utility. See the project homepage https://fronsetia.sourceforge.io and the project Wiki in the menu above.
    Downloads: 1 This Week
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    See Project
  • 9
    TraSer is an open-source software package for tracking and tracing of physical items or digitally stored documents, especially meant for small businesses. TraSer relies on web-services and uses its own identifier scheme but may adapt to other schemes.
    Downloads: 1 This Week
    Last Update:
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  • AI-powered service management for IT and enterprise teams Icon
    AI-powered service management for IT and enterprise teams

    Enterprise-grade ITSM, for every business

    Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity. Maximize operational efficiency with refreshingly simple, AI-powered Freshservice.
    Try it Free
  • 10
    dbscript is a new PHP framework for composing distributed collaborative Semantic Web applications with Microformats, OpenID and REST Web services and Qooxdoo Ajax Toolkit. install --> wget dbscript.net/latest.zip, unzip latest.zip, vi db/config.yml
    Downloads: 1 This Week
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  • 11
    The emerge toolkit is a state-preserved web development framework. Build your whole application in one easy place. Uses O/R Mapping on the back-end, and Comet-style sockets on the front. http://emergetk.com
    Downloads: 1 This Week
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  • 12
    AJAX WebService component provides easy and efficient way to explore/invoke any WebServices directly from JavaScript (both RPC and Document style), without additional server-side support. Incorporated WebService Explorer shows many abilities of component
    Downloads: 0 This Week
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  • 13
    Af-Arch is an Open Source N-tier framework to build distribuited applications. Its license schema allows Open Source and commercial (closed source) applications. This is the foundation to build an new set of applications in a fast and reliable way.
    Downloads: 0 This Week
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  • 14

    AjaxReady

    AjaxReady makes your AJAX requests really simple to do!

    AjaxReady is a small JavaScript library that allow you to make asynchronous requests in really simple mode! Provides really simple methods and utilities functions that allow you to write your application with less code as possible.
    Downloads: 0 This Week
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  • 15
    Pure Perl module to interface with the BMC Impact Manager Web Services (IIWS) to send and receive events and data, run queries, etc. Note that this project is in a very early stage of development.
    Downloads: 0 This Week
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  • 16
    A traslator from BPEL4WS processes to YAWL workflows that works with translation patterns. It takes a BPEL document in input and creates a YAWL workflow that rapresents it.
    Downloads: 0 This Week
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  • 17
    Be4gle is a web services layer for MySQL that exposes the database as a SOAP server. HTML forms and a generic JavaScript soap client are generated from XML templates enabling client side data binding and event-driven web applications (AJAX).
    Downloads: 0 This Week
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  • 18
    Cloudy is a open source cloud development environment, based on Mozilla Bespin. If somebody is interested in helping with this project, just email me.
    Downloads: 0 This Week
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    See Project
  • 19
    It is a lightweight API to invoke web services (RMI, CORBA, WebService (SOAP), XML-RPC, EJB, Hessian, Burlap, REST, ...), how simple Java Object calls. You can integrate Crispy in a Service Oriented Architecture (SOA) or in a Rich Client Platform (RCP).
    Downloads: 0 This Week
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  • 20
    Cross platform and cross browser generic rapid application development studio tool, runs on Java/Reflection, hibernate, spring and DOJO ajax framework. Provides drag and drop design and development of applications live on intranet or internet.
    Downloads: 0 This Week
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  • 21
    DrOntoAPI
    A consumer API that can process the response of an ontology evaluation web service provider.
    Downloads: 0 This Week
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  • 22
    EASYBuilderEASYDATACenter

    EASYBuilderEASYDATACenter

    NET4.5 Simple Application Builder + Reporting

    Cheap RESTFULL / WEBSocket multiplatform backend Server Cheap NET4.5 Simple Application Builder + Reporting
    Downloads: 0 This Week
    Last Update:
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  • 23
    Creating Forms and its Elements with few lines of PHP code, without any HTML. Ajax support, JS-AFV (auto-form-validation). Now also with brandnew Templatesystem to reload ones filled out Forms. Ride the Lightning !!!
    Downloads: 0 This Week
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  • 24
    The Frost library is a tool for JavaScript development in widget engines and mobile browsers. We try to create a simple means for unified access to device capabilities and Ajax requests in as many different widget engines and mobile browsers as possible.
    Downloads: 0 This Week
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  • 25
    Fydji WS is a Web Services creation framework allowing to build services mapped to database operations, Java methods or other sources. It produces a Web application for services publishing and Java/JavaScript/PHP client classes for their invocation.
    Downloads: 0 This Week
    Last Update:
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