Open Source C# Protocols for Windows

One framework to power them all. Write your HTTP APIs once and take advantage of end-to-end typed integrations for all popular web, mobile and desktop platforms. ServiceStack's primary goal is to enhance the value of System APIs which serve as the blueprint that most features centered around. By using simple & pure dependency-free DTO models decoupled from any implementation we're free to continue layering on features which now sees ServiceStack APIs as the most versatile in the world where the same high-performance APIs can be consumed from HTTP in any combination of Route, QueryString, FormData or a myriad of data formats, via popular resilient MQ Servers whilst simultaneously supporting legacy integrations like SOAP or adopting new technologies like gRPC without sacrificing any native HTTP integrations. To maximize the value of APIs we're focused beyond the API boundary by making it as simple as possible for API Consumers to call your APIs.

SMPP protocol library for fast and easy SMSC(Short Message Service Centre) client development even for non-telecom guys. Easy to use classes covers all needed functionality for SMS applications developers and Content Providers. Written for .NET 2.0 in C#

This program implements a SOAP client that could send an XML to a web service and display a response interactively. It was primarily built to test different security measures that are usually implemented to protect SOAP traffic.

LibY!Mail is a .NET object oriented hierarchical encapsulation of the Yahoo! Mail web services. It allows developers of web applications easy access to the web services, without the hassle of having to follow message ID's, part ID's and their relations.

A collection of libs and tools for working with the Betfair public API.

AceJudge is a system for managing programming contests. AceJudge's basic features include automatic judging of submitted programs, answering to clarification questions about problem descriptions, reevaluation of programs, real time ranking etc.

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.

Ajax.NET is an implementation of the AJAX technology used by Google, Orkut, Flickr, ... for the .NET environment. Call server side methods as if they were on the clientside.

CUAHSI WaterObjectFlow provide JSON web service for hydrology observation data,sponsored by National Science Foundation of United States,developed by Joe hu, MapWindow software lab,Idaho State University

CUAHSI water1flow web service 1.0 api provide programming interface for water1flow web services. Api will expose to .net, java, php, javascript etc programming language. Developed by Joe hu at MapWindow software lab,Idaho State University

Cheap RESTFULL / WEBSocket multiplatform backend Server Cheap NET4.5 Simple Application Builder + Reporting

MM7 protocol library for fast and easy MMSC(Multimedia Messaging Service) client development even for non-telecom guys. Easy to use classes covers all needed functionality for MMS applications developers and Content Providers. Written for .NET 2.0 in C#.

A random number generator based on data from human interface devices. A trayicon that provides access to the generated data in various data ouput formats: Guids, Passwords, Files etc. Future goal is build-in P2P exchange of gathered data.

A general purpose API tester GUI. You can specify a URL and send GET or POST requests to it as a client with an interface allowing you to setup a database of API commands and their parameters. Useful for probing 3rd party APIs, or building your own.

MagentoXtender .NET Webservice Client is an open source .NET library to connect to the webservice of a Magento Webshop using XML-RPC. This module gives you the ability to create .NET applications which can communicate with a magento webshop.

Mean Fiddler is a REST-style data service for .Net similar to the Microsoft project codenamed Astoria but based on NHibernate as the domain model.

MonoOSC is a project composed of two parts. A CSharp, C#, library used to access the openSUSE Build Service, OBS. The second part is a nice GUI which uses this library. MonoOSC requires the Mono >= 2.1 version of the distribution.

Notify.me public APIs and code

Framework for supporting reliable, secure E-Business using open standards. Including components for web service calls, non-repudiation, UDDI-registries and a standardized subset of the UBL 2.0 business document profile. Supported for .Net and java.

XUP (Extensible User Interface Protocol) is a SOAP-based protocol for delivering events and incremental UI updates. This project builds a web application development framework on top of XUP, consisting of a client, a server toolkit, and a template viewer.

TRIAD is a browser-independent and platform-independent framework for Rich Internet Aplications.

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.

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

Soya is an open-source implementation of the SSDL specification, built on top of the Windows Communictaion Foundation (WCF) (formerly Indigo). it provides a programming model and runtime environment for creating and enacting SSDL contracts.