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
    AutoWikiBrowser is a semi-automated Wikipedia editor, designed to make tedious, repetitive tasks quicker and easier. For more information, see the project homepage at http://en.wikipedia.org/wiki/Wikipedia:AutoWikiBrowser.
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    Downloads: 61 This Week
    Last Update:
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  • 2
    WebKit .NET
    WebKit .NET is a control library wrapper for WebKit written in C#. The aim is to make it easy for users to incorporate WebKit into their .NET applications.
    Downloads: 24 This Week
    Last Update:
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  • 3
    Codepage Converter
    Codepage Converter - Convert HTML/Text files to different encoding formats e.g. ANSI to UTF-8 or Unicode. Convert multiple files with 1 click. Works with all encodings. * The issue with UTF-8 has now been fixed.
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    Downloads: 27 This Week
    Last Update:
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  • 4
    Megaupload Downloader
    Megaupload Downloader is a programme born to avoid users tons of advertisement, poup-ups, etc.. that we get when we try to download from free file hosting services.
    Downloads: 17 This Week
    Last Update:
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  • Comprehensive Cybersecurity to Safeguard Your Organization | SOCRadar Icon
    Comprehensive Cybersecurity to Safeguard Your Organization | SOCRadar

    See what hackers already know about your organization – and stop them from getting in.

    Protect your organization from cyber threats with SOCRadar’s cutting-edge threat intelligence. Gain 360° visibility into your digital assets, monitor the dark web, and stay ahead of hackers with real-time insights. Start for free and transform your cybersecurity today.
    Free Trial
  • 5
    A Windows TFTP server and client written in the .NET framework using C#. Includes support for TFTP options, logging of TFTP requests to different sources including to a SQL server. A class is also available to include TFTP into your own program.
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    Downloads: 53 This Week
    Last Update:
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  • 6
    PDF Clown

    PDF Clown

    General-Purpose PDF Library for Java and .NET

    PDF Clown is a general-purpose Java and .NET library for manipulating PDF files through multiple abstraction layers, rigorously adhering to PDF 1.7 specification (ISO 32000-1). This project aims to provide a universal access to PDF files (creation, reading, editing, rendering...) through an accurate and elegant object-oriented API. * Features: http://pdfclown.org/overview/features/ * Overview: http://pdfclown.org/overview/architecture/ * Website: http://pdfclown.org/ * Blog: http://www.pdfclown.org/blog/ * Twitter: https://twitter.com/PDFClown
    Downloads: 17 This Week
    Last Update:
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  • 7

    TwoFactorQRCodeReader

    2FA QR Code Reader for KeePass

    This is a plugin to KeePass <http://www.KeePass.info> to easily create the two-factor authentication parameters used by the KeePass placeholders {HMACOTP} and {TIMEOTP} from QR codes shown on screen.
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    Downloads: 49 This Week
    Last Update:
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  • 8
    Hive Mind LOIC
    Hive Mind LOIC is a version of the Low Ordbit Ion Cannon made by Praetox, which was adapted for centralized control by NewEraCracker, when the project was then taken on by me. The amongst a few fixes I added RSS control (Such as via Twitter).
    Downloads: 10 This Week
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  • 9
    The stuff here has no documentation and some of it may never be completed. This is my playground, use at your own risk.
    Downloads: 7 This Week
    Last Update:
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  • Sales CRM and Pipeline Management Software | Pipedrive Icon
    Sales CRM and Pipeline Management Software | Pipedrive

    The easy and effective CRM for closing deals

    Pipedrive’s simple interface empowers salespeople to streamline workflows and unite sales tasks in one workspace. Unlock instant sales insights with Pipedrive’s visual sales pipeline and fine-tune your strategy with robust reporting features and a personalized AI Sales Assistant.
    Try it for free
  • 10
    ljArchive is a tool for downloading, browsing, and analyzing journal entries and comments from LiveJournal (or LiveJournal clones).
    Downloads: 9 This Week
    Last Update:
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  • 11
    Simple Network Management Protocol (SNMP) .Net library written in C# (csharp). Implements protocol version 1, 2 and 3
    Downloads: 6 This Week
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  • 12
    LOIC

    LOIC

    LOIC TCP/IP Stresser v1.1.0.1 By LifeOwner

    LOIC TCP/IP Stresser Tool History I was downloaded the original LOIC within version 1.0.8.0 and changed it to be better without changing the other functions which were worked nice. The grey skin i hope you like it! Reworked by LifeOwner. New Features Work • The UDPV2 work like charm with low builded connections you might get timeout in your internet connection might cause you're too slow. (I tested it with 25MB's Downstream/ 2MB's Upstream). • The status checker function will be slowly when the ip->port will be offline, so do not worry the program still running and working on it, just the timeout is bigger than usually to make sure it will works for slower connections. Have fun with it i hope you will like it! New build by LifeOwner 2016.
    Downloads: 26 This Week
    Last Update:
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  • 13
    Full-featured, fully customizable, multilingual, skinable, multi-document web based WYSIWYG HTML editor control. Microsoft Internet Explorer, Gecko based browsers (Firefox, Netscape, Mozilla) and Opera 9 are supported.
    Downloads: 14 This Week
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  • 14
    IIS7 Geoblock Module
    A geoblock module created by Triple IT. It can be added to the IIS7 pipeline (now also on IIS 8.5). It uses the IPv4 address to determine the geographic location of the request by using maxminds geo IP file and takes action accordingly. Next to the module, 2 tools are included. 1 to quickly lookup the country for a specific IP address and 1 to help you automate the update of the MaxMind data file. An extensive manual is available to install and use the module.
    Downloads: 3 This Week
    Last Update:
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  • 15
    <HTML> Editor
    <HTML> Editor is a free open source HTML editor from Sheva Software Inc the HTML Editor includes syntax highlighting and a unique feature of a live previewing of current HTML document, check it out, and please wright a review if possible.
    Downloads: 2 This Week
    Last Update:
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  • 16
    MultiSearch
    MultiSearch is a simple and fast search engine able to concatenate and organize multiple results. Easy to customize for the end users.
    Downloads: 2 This Week
    Last Update:
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  • 17
    In this project, we expect to build supporting libraries to develop applications on top, and as many open standards we can. Use tracker to request libraries and enhancements. Visit our home page at http://nmatrix.com.ar
    Downloads: 3 This Week
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  • 18
    A native .NET implementation of Dave Ragget's Tidy.
    Downloads: 3 This Week
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  • 19
    Arisen Studio

    Arisen Studio

    Browse, Download and Install Mods for PlayStation 3 & Xbox 360

    The elegant, powerful, and open-source mod manager. Arisen Studio allows you to easily browse through a regularly updated database of mods, game saves, homebrew, resources, themes, and much more for the PlayStation 3 and Xbox 360. All mods have been tested and verified in our library, which is populated by myself, a few friends, and awesome contributors. Arisen Studio can also be used as an FTP client to install and uninstall mods directly from your console. Without the need to search up old posts or use file managers - this will do everything for you.
    Downloads: 1 This Week
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    See Project
  • 20
    WebServer / AMP Stack for Windows

    WebServer / AMP Stack for Windows

    WebServer (AMP Stack) for Windows. Support multiple PHP versions.

    WebServer (AMP Stack) for Windows. Support multiple PHP versions. - Software: Apache, MySQL, MariaDB, MongoDB. - Multiple PHP Versions. - Apache supports HTTPS. - Can install on External Disk, it will fix the config path for you. - Auto-create hosts file entry for the website. - Manage servers as Windows services. - Manage websites with different PHP versions. - Auto-create missing service while starting the server. - Change port easily. - Map public folder inside, instead of root public_html folder.
    Downloads: 1 This Week
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  • 21

    On the Fly Downloader

    Makes web-hosted files local without downloading them entirely

    On the Fly Downloader (formerly known as RemoteDrive) allows using files from the web locally. A local file is created, which behaves like a fully downloaded copy even though the download is still in progress.
    Downloads: 4 This Week
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    See Project
  • 22
    The EA Protocol Handler is a program, targeting the Windows operating system, that defines and handles an ea:// protocol to link from web pages to specific artifacts in Enterprise Architect repositories.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 23

    ZModem 4 dotNET

    A C# implementation of ZModem protocol

    Few weeks ago, I needed to get 1 file from a remote device, and only serial communication was possible. I search everywhere, but I couldn't find any implementation for .net... So here it comes as a simple "get file" library. It works with several limitations that can be improved if needed. The project is built with Visual Studio 2008
    Downloads: 2 This Week
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    See Project
  • 24
    ChemProV is a tool used by chemical engineering students to solve material balance problems. The project is maintained by Washington State University. For more information on how to install ChemProV, please visit the project's website.
    Downloads: 3 This Week
    Last Update:
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  • 25
    FileMasta

    FileMasta

    A search application to explore, discover and share online files

    A federated search application for discovering interesting files that are being shared online, such as video, music, books, software, games, subtitles and much more. All data is crawled by od-database which collects information about the contents of servers worldwide. We don't search file contents. We host no content, we provide only access to already available files in the same way Google and other search engines do.
    Downloads: 3 This Week
    Last Update:
    See Project
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