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

  • Passwordless Authentication and Passwordless Security Icon
    Passwordless Authentication and Passwordless Security

    Identity is everything. Protect it with Duo.

    It’s no secret — passwords can be a real headache, both for the people who use them and the people who manage them. Over time, we’ve created hundreds of passwords, it’s easy to lose track of them and they’re easily compromised. Fortunately, passwordless authentication is becoming a feasible reality for many businesses. Duo can help you get there.
    Get a Free Trial
  • Build Securely on Azure with Proven Frameworks Icon
    Build Securely on Azure with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 1
    FCKeditor

    FCKeditor

    FCKeditor (retired)

    FCKeditor is the previous version of CKEditor and has been discontinued after version 2. The new CKEditor is redesigned from the ground up, offering more WYSIWYG text editing features, enhanced security and better integration. Don’t force yourself with retro FCKeditor. Switch to the new, cool CKEditor at ckeditor.com
    Downloads: 34 This Week
    Last Update:
    See Project
  • 2
    The Report.NET library contains classes that generate precise PDF documents. It's written in C# for the .NET platform. ASP.NET can be used to create dynamic PDF-response pages.
    Downloads: 2 This Week
    Last Update:
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  • 3
    VCalendar is an open source Web calendar application for posting and maintaining events and schedules online. A free solution for use by online Web communities and any commercial and non-commercial organizations, available in PHP, ASP, C# and VB.NET.
    Downloads: 2 This Week
    Last Update:
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  • 4
    Chimaera is a unique suite of fully-featured web applications designed to empower your site, enhance communication channels between you and your visitors, and allow you to fuse your data management systems into a flexible, multi-user entity.
    Downloads: 1 This Week
    Last Update:
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  • Our Free Plans just got better! | Auth0 by Okta Icon
    Our Free Plans just got better! | Auth0 by Okta

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your secuirty. Auth0 now, thank yourself later.
    Try free now
  • 5
    ASPhoto Gallery is a turn-key solution for users who want to create an Online Photo albums. These photo albums can be moderated or unmoderated. This is idea so from one wanting to public class room artwork, or digital camera photos of every day life.
    Downloads: 0 This Week
    Last Update:
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  • 6
    It moves by itself inside networks like virus infection & plagues, it is being written to solve computer virus problem drastically and responsibly. It is legal, free and open for public domain to improve W3 ICT Security.
    Downloads: 0 This Week
    Last Update:
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  • 7
    This project is based on Microsofts IBuySpy portal project and community starter kit. This project aims creating a customizable and easily deployable portal code. This includes discussion forums, voting, downloads etc.
    Downloads: 0 This Week
    Last Update:
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  • 8
    The Completion of CMS.NET the CMS built in Stephen R. G. Frasers book Real World ASP.NET: Building a Content Management System. For those of you who have read the book know its a good beginning but there is still a long way to go.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 9
    The .Net CP Project has the goal to create a totally free web hosting control panel that works with .NET technology on windows 2000/2003 servers. The panel will control aspects as: webspace, bandwith, dns, mail, news, and more.
    Downloads: 0 This Week
    Last Update:
    See Project
  • Build Securely on AWS with Proven Frameworks Icon
    Build Securely on AWS with Proven Frameworks

    Lay a foundation for success with Tested Reference Architectures developed by Fortinet’s experts. Learn more in this white paper.

    Moving to the cloud brings new challenges. How can you manage a larger attack surface while ensuring great network performance? Turn to Fortinet’s Tested Reference Architectures, blueprints for designing and securing cloud environments built by cybersecurity experts. Learn more and explore use cases in this white paper.
    Download Now
  • 10
    Simple ASP.NET portal software for web-based content creation / modification with full version change history
    Downloads: 0 This Week
    Last Update:
    See Project
  • 11
    a .NET ASP web application to display pictures from a web directory. It generates thumbnails and image previews on the fly.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 12
    Firework was a content management system / web portal system using ASP, VBScript, SqlServer and mySql. After an upgrade to version 2 running on ASP.NET with Sql Server 2000 we are now migrating onto a linux platform using Ruby on Rails with a MySql db.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 13
    FreeTextBox 1.x is an HTML editor control for ASP.NET. It is not longer supported. Please visite http://www.freetextbox.com/ for FreeTextBox 2.0.
    Leader badge
    Downloads: 0 This Week
    Last Update:
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  • 14
    Jukester is a web based interface for accesing all of your digital music colection. It currently supports ogg's and mp3's, and music is searchable by artist,album or song name.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 15
    Ment-O-Matic allows users of ASP.NET platform to easily add commenting facility to an existing blog or similar web-based software so that readers can comment on some of the contents presented on the web site.
    Downloads: 0 This Week
    Last Update:
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  • 16
    NovaShare is an engine that allows you to create fully-interactive web-based news and discussion sites, much like WonkoSlice or Slashdot. Administrators can post articles and polls, and readers can create user accounts, post comments, and more.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 17
    A weblogging application that lets user to setup a weblog or multiple weblogs for multiple users (in the case that an ISP wants to provide weblog service).
    Downloads: 0 This Week
    Last Update:
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  • 18
    WebApplication for manage a school, student, professor, create activity, planing. View student state by course, validation, exercice Automate promotion process. Create distribute exercice for student groupe.
    Downloads: 0 This Week
    Last Update:
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  • 19
    ProjectPortal is a multi-lingual, multi-user web-based groupware suite for programme & projectmanagement written in Visual C# ASP.NET using MS Access, MS SQL/MSDE, Oracle or MySQL for datastorage.
    Downloads: 0 This Week
    Last Update:
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  • 20
    A virtual desktop for students of computer science. Developed in C#/MSDE/ASP.NET. Runs on .NET/IIS5+.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 21
    Seven-Labs

    Seven-Labs

    Application Development

    This repository serves as our entire project space which contains all of the open-source projects we've worked on. - C/C++ - C#/.NET - PHP - HTML5/CSS3
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    Creating new session object (.Net CLR) that: 1) Can be shared among other process in the computer (DLLHOST.EXE and other) 2) Synchronize and shared among all process in the web-farm computers
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Wireless Universal Resource File

    Wireless Universal Resource File

    Handset Detection for Mobile Applications. Device Description Database

    WURFL lets you detect thousands of types of mobile devices accessing your web service and take decisions based on what that device can or cannot do. With WURFL, you can optimize mobile web content, effectively deliver advertisements, or analyze mobile traffic. WURFL will read HTTP requests from mobile browsers and search the Device Description Repository (DDR) for the corresponding device properties (i.e. capabilities). WURFL will return the device capabilities to your application, which can leverage this knowledge to optimize the mobile experience. WURFL can detect over 10000 device types and offers over 500 device capabilities, including desktops, smartphones, tablets, feature phones, smart TV’s and many other emerging devices types. WURFL addresses the needs of many types of users, from large enterprises with high performance requirements, to regular companies who need a solution that is simple to deploy, integrate and customize. WURFL is provided by ScientiaMobile, Inc.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    XGreen Picture Gallery is a .Net Component which allows developers to add picture gallery component from toolbox. Now with Drag and Drop! The Project is still at development. -It will not run without JS file download it too..
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    openSEAL is C# .NET libraries & frameworks that aid development of enterprise applications using best practices & design patterns like MVC & SOA. It provides architects & developers a base to rapidly implement flexible, secure n-tier solutions.
    Downloads: 0 This Week
    Last Update:
    See Project
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