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

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    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 security. Auth0 now, thank yourself later.
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  • Automate contact and company data extraction Icon
    Automate contact and company data extraction

    Build lead generation pipelines that pull emails, phone numbers, and company details from directories, maps, social platforms. Full API access.

    Generate leads at scale without building or maintaining scrapers. Use 10,000+ ready-made tools that handle authentication, pagination, and anti-bot protection. Pull data from business directories, social profiles, and public sources, then export to your CRM or database via API. Schedule recurring extractions, enrich existing datasets, and integrate with your workflows.
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  • 1
    Cosmos

    Cosmos

    Cosmos is an operating system "construction kit"

    Cosmos is an operating system "construction kit" made for Visual Studio 2022. Build your own OS using managed languages such as C#, VB.NET, and more! Cosmos (C# Open Source Managed Operating System) is an operating system development kit that uses Visual Studio as its development environment. Despite C# in the name any .NET-based language can be used including VB.NET, Fortran, Delphi Prism, IronPython, F# and more. Cosmos itself and the kernel routines are primarily written in C#, and thus the Cosmos name. Cosmos is not an operating system in the traditional sense, but instead, it is an "Operating System Development Kit". Cosmos lets you create operating systems just as Visual Studio and C# normally let you create applications. Most users can write and boot their own operating system in just a few minutes, all using Visual Studio.
    Downloads: 6 This Week
    Last Update:
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  • 2
    ActiveLock is an open-source copy protection, software licensing framework for all development enviroments supporting COM+ architecture. Core DLL available in VB2008 and VB6. Samples in C++, C#, Excel/Access VBA and keygens in PHP, ASP.NET available.
    Downloads: 1 This Week
    Last Update:
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  • 3
    CIOP is the project which allows to connect [Web]Applications to each other by simple Common Information Objects and to exchange the data between Information Systems.
    Downloads: 0 This Week
    Last Update:
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  • 4
    Open Source web application tester program for load testing web applications.Record ajax requests.Tested on asp.net applications, but works with jsp, php or other.Generates a C# class that you can modify, the class has functions for handling the query/po
    Downloads: 0 This Week
    Last Update:
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  • AestheticsPro Medical Spa Software Icon
    AestheticsPro Medical Spa Software

    Our new software release will dramatically improve your medspa business performance while enhancing the customer experience

    AestheticsPro is the most complete Aesthetics Software on the market today. HIPAA Cloud Compliant with electronic charting, integrated POS, targeted marketing and results driven reporting; AestheticsPro delivers the tools you need to manage your medical spa business. It is our mission To Provide an All-in-One Cutting Edge Software to the Aesthetics Industry.
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  • 5
    Parse and harvest existing source code Create RAS compliant assets Sub-Second Code Searching (Class inherits QUERY, Implements QUERY, etc...) Reverse engineer source code to UML (Class Diagram and Sequence Diagrams) And much much more
    Downloads: 0 This Week
    Last Update:
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  • 6
    PHPRPC is a Remote Procedure Calling (RPC) protocol that works over the Internet. It is secure and fast. It has a smaller overhead. It is powerful and easy to use. This project is the client and server implementations of the PHPRPC.
    Downloads: 0 This Week
    Last Update:
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  • 7
    Prolix is an extension appender for the log4net logging framework. Prolix directs logging for an ASP.NET session to a separate tab in the browser. Since communication is over HTTP, users can watch logging data regardless of security constraints.
    Downloads: 0 This Week
    Last Update:
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  • 8
    Application monitoring Framework and Command Center administration console to change application settings like alert scheme, monitoring timings, etc., Uses SOAP/XML webservice to communicate between Command Center and the monitored applications.
    Downloads: 0 This Week
    Last Update:
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  • 9
    The Wandering Developer Deploy Tools are a set of tools to help dotnet developers automate deployment. This is a useful toolkit if you wish to implement autoupdating in your application.
    Downloads: 0 This Week
    Last Update:
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  • The Original Buy Center Software. Icon
    The Original Buy Center Software.

    Never Go To The Auction Again.

    VAN sources private-party vehicles from over 20 platforms and provides all necessary tools to communicate with sellers and manage opportunities. Franchise and Independent dealers can boost their buy center strategies with our advanced tools and an experienced Acquisition Coaching™ team dedicated to your success.
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  • 10

    WorkHub

    A modular ASP.NET/db4o based application framework

    Includes 7 project organization and management modules by default. Download the latest releases and get SVN checkout info at www.softwaremonkeys.net.
    Downloads: 0 This Week
    Last Update:
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  • 11
    .NET solution helping U.S. health officials inspect food service establishments for compliance with state/local health & sanitation regulations. Mobile component assists field-work while a back-office component administers forms, records and scheduling.
    Downloads: 0 This Week
    Last Update:
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  • 12
    hostingstar.com.au's open source software. To be used primarily for dotnetnuke modules, a cross platform backup system, .net (dotnet) user controls, 3d plugins and many other bits and pieces.
    Downloads: 0 This Week
    Last Update:
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  • 13
    A .NET framework for easy crash reporting to a Web Service.
    Downloads: 0 This Week
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  • 14
    text replace case insensitive c# vb.net

    text replace case insensitive c# vb.net

    .NET replace text case insensitive

    Fast algorithm text (string) replace case insensitive writing in .NET. Increase the performance of your application!
    Downloads: 0 This Week
    Last Update:
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  • 15
    Bienvenidos.
    Downloads: 0 This Week
    Last Update:
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