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

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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
    IdentityServer4

    IdentityServer4

    OpenID Connect and OAuth 2.0 Framework for ASP.NET Core

    IdentityServer is a free, open-source OpenID Connect and OAuth 2.0 framework for ASP.NET Core. Founded and maintained by Dominick Baier and Brock Allen, IdentityServer4 incorporates all the protocol implementations and extensibility points needed to integrate token-based authentication, single-sign-on and API access control in your applications. IdentityServer4 is officially certified by the OpenID Foundation and thus spec-compliant and interoperable. It is part of the .NET Foundation and operates under their code of conduct. It is licensed under Apache 2 (an OSI-approved license). Active development happens on the main branch. This always contains the latest version. Each (pre-) release is tagged with the corresponding version. The aspnetcore1 and aspnetcore2 branches contain the latest versions of the older ASP.NET Core based versions.
    Downloads: 3 This Week
    Last Update:
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  • 2

    AD Group Recopier

    Copy users and groups to another AD form a group

    With AD Group Recopier you can : - Copy Users and Groups from a source AD to a destination AD and select a OU for Groups and Users. - Map AD attribut to Destination
    Downloads: 0 This Week
    Last Update:
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  • 3
    A C# module to allow ASP.Net sites to easily use the TypeKey authentication service.
    Downloads: 0 This Week
    Last Update:
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  • 4
    Encode/Decode library to/from Basic Encoding Rules (BER) of ASN.1 written in Visual Basic .Net. Useful to implement any protocol that uses BER (LDAP, SNMP, etc.).
    Downloads: 0 This Week
    Last Update:
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  • HOA Software Icon
    HOA Software

    Smarter Community Management Starts Here

    Simplify HOA management with software that handles everything from financials to communication.
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  • 5
    Composite Membership Provider for ASP.Net 2.0
    Downloads: 0 This Week
    Last Update:
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  • 6
    Easy and ready-to-use set of .Net Classes to implement LDAP applications (Servers and Clients). Included in the project: - Classes for all types of LDAP Requests and Responses; - Void Server and void Client Classes, ready for custom implementations.
    Downloads: 0 This Week
    Last Update:
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  • 7
    Lightweight Authentication Module (LAM) is a language-neutral API allowing single-sign-on to be easily implemented across diverse applications. Provides authentication via CAS or other engines, and manages sessions. Client bindings in C#, Perl, or Java.
    Downloads: 0 This Week
    Last Update:
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