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

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  • 1
    The portable Universal Plug and Play (UPnP) SDK provides support for building UPnP-compliant control points, devices, and bridges on several operating systems. The main repository is at GitHub in https://github.com/pupnp/pupnp. This is just a clone repository for legacy reasons. Old SourceForge repo: git://pupnp.git.sourceforge.net/gitroot/pupnp/pupnp
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    Downloads: 3,978 This Week
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  • 2
    a POSIX-C implementation of the http://oauth.net/ protocol. libOauth provides functionality to encode URLs and sign HTTP request data according to the oAuth standard.
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    Downloads: 3,834 This Week
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  • 3
    Mongoose Embedded Web Server

    Mongoose Embedded Web Server

    An embedded web server

    Mongoose is a networking library for C/C++. It implements event-driven non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT. It is designed for connecting devices and bringing them online. On the market since 2004, used by vast number of open source and commercial products - it even runs on the International Space Station! Mongoose makes embedded network programming fast, robust, and easy. Cross-platform, works on Linux/UNIX, MacOS, Windows, Android, FreeRTOS, etc. Supported embedded architectures: ESP32, NRF52, STM32, NXP, and more. Built-in protocols: plain TCP/UDP, HTTP, MQTT, Websocket. SSL/TLS support: mbedTLS, OpenSSL or custom (via API). Used to solve a wide range of business needs, like implementing Web UI interface on devices, RESTful API services, telemetry data exchange, remote control for a product, remote software updates, remote monitoring, and others.
    Downloads: 14 This Week
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  • 4
    OpenResty

    OpenResty

    High Performance Web Platform Based on Nginx and LuaJIT

    OpenResty is a full-fledged web application server that extends Nginx by seamlessly embedding LuaJIT, bundled Nginx core, numerous third-party modules, and Lua libraries—creating a powerful platform for scalable web services, APIs, and gateways. An extensive ecosystem of Lua libraries and third-party Nginx modules that interoperate cohesively. Supports scripting of SSL, process control, regex, pipes, and logging via Lua APIs. Well-supported documentation, Docker tooling, and commercial support options.
    Downloads: 10 This Week
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    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.
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    Downloads: 40 This Week
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  • 6
    Portable and very simple C API functions to write a soap client/server in c.
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    Downloads: 58 This Week
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  • 7
    twemproxy

    twemproxy

    A fast, light-weight proxy for memcached and redis

    twemproxy (pronounced "two-em-proxy"), aka nutcracker is a fast and lightweight proxy for memcached and redis protocol. It was built primarily to reduce the number of connections to the caching servers on the backend. This, together with protocol pipelining and sharding enables you to horizontally scale your distributed caching architecture. Fast and lightweight. Maintains persistent server connections. Keeps connection count on the backend caching servers low. Enables pipelining of requests and responses. Supports proxying to multiple servers. Supports multiple server pools simultaneously. Shard data automatically across multiple servers. Implements the complete memcached ascii and redis protocol. Easy configuration of server pools through a YAML file. Supports multiple hashing modes including consistent hashing and distribution. Can be configured to disable nodes on failures.
    Downloads: 2 This Week
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  • 8
    MyPoorWebServer

    MyPoorWebServer

    Demonstrates fundamental HTTP server implementation principles

    MyPoorWebServer is a C/C++-based web server project that demonstrates fundamental HTTP server implementation principles drawn from classic network programming literature and high-performance server design books. The repository contains source code that implements a basic HTTP server, intended to be compiled and run from the command line, exposing introductory web server functionality such as serving static HTML files and handling simple POST requests. It was originally developed as a resume project to demonstrate understanding of TCP/IP network programming, socket handling, and server lifecycle management, and so it reflects a hands-on approach to building server software from scratch rather than relying on frameworks. The project includes build instructions, example pages to host, and documentation encouraging readers to read reference texts before diving in.
    Downloads: 1 This Week
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  • 9

    WendzelNNTPd

    A free Usenet server with SQL backend and RBAC.

    The WendzelNNTPd is a IPv6-ready NNTP usenet-server with the main goal to be as easy to use as possible. It is portable (Linux/*BSD/*nix), supports AUTHINFO authentication, contains ACL as well as role based ACL and supports invisible newsgroups. It currently supports MySQL and SQLite backends.
    Downloads: 22 This Week
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  • 10
    R3R
    R3R is a small, fast, and portable reader for RSS, ESF, and Atom feeds.
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    Downloads: 11 This Week
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  • 11
    FreeRDP is a free remote desktop protocol client that implements RDP following the documentation provided under the Microsoft Open Specification Promise.
    Downloads: 3 This Week
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  • 12
    Orthanc

    Orthanc

    Lightweight, RESTful DICOM server for healthcare and medical research

    [2015-06-12] Orthanc has left SourceForge. All the downloads are now available directly from our official Website: http://www.orthanc-server.com/browse.php
    Downloads: 6 This Week
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  • 13
    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.
    Downloads: 6 This Week
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  • 14
    Python XML Serialization
    pyxser stands for python xml serialization and is a python object to XML serializer that validates every XML deserialization against the pyxser 1.0 XML Schema. pyxser is written entirely in C as a python extension.
    Downloads: 2 This Week
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  • 15
    A web server that runs on the wii
    Downloads: 2 This Week
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  • 16
    Library, initially written for the ScreenKast program. Provides the necessary logic to capture screen recordings and to process them. Includes a soap-client for the webservice at captorials.com that enables you to share your recordings.
    Downloads: 2 This Week
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  • 17
    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: 2 This Week
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  • 18
    XML-Parser Library for BR-Automation PLC

    XML-Parser Library for BR-Automation PLC

    Simple to use XML-Parser/Composer Library for B&R Automation PLC (SPS)

    The Library xmlio is a simple to use non validating XML-Parser/Composer for B&R Industrial-Automation PLC (B&R SPS). It reads and writes Process-Variables including Structures from and to XML-Files. Easy to use: #include <xmlio.h> /* Write Variable to XML-File */ status = xmlWrite(strName, strFile, strDevice, 0); /* Read XML-File into Variables */ status = xmlRead(strFile, strDevice, ignoreUnknown, &line, &character);
    Downloads: 2 This Week
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  • 19
    Smart servers that can provide customized snippets of digital orthophotos using just-in-time geoprocessing and interoperable web-based components. These servers are based on the MITOthoServers who was under the GNU Public License (GPL).
    Downloads: 1 This Week
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  • 20
    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: 1 This Week
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  • 21
    Paperboy RSS aims to be the most powerful open-source news aggregator. Paperboy RSS works as a collection of tools for parsing XML through a base program and formatting it with XSLT.
    Downloads: 1 This Week
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  • 22
    Porcupine is an open-source Python based web application server that provides front-end and back-end revolutionary technologies for building modern data-centric Web 2.0 applications.
    Downloads: 1 This Week
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  • 23
    A portable library for writing web servers and web services in C.
    Downloads: 1 This Week
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  • 24
    The Virtual Laboratory for Earth and Planetary Materials (VLab) collaborative GRID-based environment. Concentrating on scientific computation workflows and auto-generation of visualization services. http://vlab.msi.umn.edu
    Downloads: 1 This Week
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  • 25
    A simple console RSS aggregator that sends news items by email.
    Downloads: 0 This Week
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