C Authentication Software

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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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  • 1
    *NOTE* Migrated to http://github.com/cracklib/cracklib Next generation version of libCrack password checking library. As of Oct 2008 (reflected in 2.8.15 code release), licensed under LGPL.
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    Downloads: 2,292 This Week
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  • 2
    OpenPAM
    OpenPAM is an open source PAM library that focuses on simplicity, correctness, and portability.
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    Downloads: 82 This Week
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  • 3
    PAM module which permits authentication for arbitrary services via ssh-agent. Written with sudo in mind, but like any auth PAM module, can be used for for many purposes.
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    Downloads: 34 This Week
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  • 4
    Purpose of this project is to build portable, easy-to-use and standard compliant library suitable for developing free and commercial software that need support for a RADIUS protocol (RFCs 2138 and 2139).
    Downloads: 17 This Week
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  • 5
    GQ is an LDAP client based on GTK+/GTK2
    Downloads: 3 This Week
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  • 6
    raddump interprets captured RADIUS packets to print a timestamp, packet length, RADIUS packet type, source and destination hosts and ports, and included attribute names and values for each packet.
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    Downloads: 8 This Week
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  • 7
    Implementation of checkpassword-compatible PAM authentication program. Details on "checkpassword" interface are available at http://cr.yp.to/checkpwd.html
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    Downloads: 7 This Week
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  • 8

    libpam-pgsql

    Project moved to github: https://github.com/pam-pgsql/pam-pgsql

    Project has been moved to github: https://github.com/pam-pgsql/pam-pgsql
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    Downloads: 3 This Week
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  • 9

    DACS - Distributed Access Control System

    Authentication, Access Control, and Single Sign-On

    DACS,a light-weight single sign-on and role-based security system for Apache or server-based software, provides comprehensive authentication capabilities, and powerful, transparent rule-based authorization checking for any web service or CGI program. The latest release is DACS 1.5.1 (26-Oct-2025) It is not available here! Get it at https://dacs.dss.ca/download.html
    Downloads: 4 This Week
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  • 10

    Cosign: Web Single Sign-On

    Open Source Web Single Sign-On

    An open source project originally designed to provide the University of Michigan with a secure single sign-on web authentication system. Cosign is part of the National Science Foundation Middleware Initiative (NMI) EDIT software release.
    Downloads: 1 This Week
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  • 11
    Middleware for Existing SSH Hosts (Mesh)

    Middleware for Existing SSH Hosts (Mesh)

    Fine-grained authorizations and single sign-on for SSH remote commands

    Mesh is a secure, lightweight grid middleware that is based on the addition of a single sign-on capability to the built-in public key authentication mechanism of SSH using system call interposition.
    Downloads: 3 This Week
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  • 12

    pGina

    pGina is an open source replacement authentication system for Windows

    pGina is an open source replacement authentication system for the Windows OS that uses easy to write plugins to accommodate for authentication via limitless back ends. We have a new home: http://www.pgina.org or http://github.com/pgina/
    Downloads: 3 This Week
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  • 13
    WiKID Two-Factor Authentication System

    WiKID Two-Factor Authentication System

    Two-factor authentication system

    The WiKID Strong Authentication System is a public-key based two-factor authentication system. It is a flexible, extensible, and secure alternative to tokens, certs and passwords. Application & API support exists for Java, ASP, PHP, Ruby, OpenVPN, TACACS+, etc. Read our eGuide on how to setup your network with two-factor authentication: http://www.wikidsystems.com/learn-more/two-factor-authentication-white-papers
    Downloads: 1 This Week
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  • 14
    CPU is meant to be a swiss army knife for administrators who are currently using or wanting to use an LDAP backend for user authentication. This project allows for easy user administration of LDAP users and allows for user and group mods, deletes and add
    Downloads: 1 This Week
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  • 15
    EmailAuth is a plugin for pGINA that lets you authenticate your Windows users against one or more POP3/IMAP server with or without SSL.
    Downloads: 1 This Week
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  • 16
    A virtual filesystem for FUSE that allows to navigate an LDAP tree.
    Downloads: 1 This Week
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  • 17

    LoginApp

    X display management and authentication application

    Login.app is an X server management and authentication application. User authentication is performed with either a username/password or via SmartCard based authentication. At startup the app launches the X server and presents an authentication panel which also recongnizes several commands (reboot, halt, exit and console). SmartCard support relies on the OpenSSH authorized_keys file method for authentication and also requires OpenSC, pcsc-lite and OpenSSL.
    Downloads: 1 This Week
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  • 18
    Configure Unix users and groups in a MySQL database. It is system-wide like NIS or LDAP! It features open-ended database design and persistent connections. Works with NSS-compatible systems (Linux, Solaris, FreeBSD).
    Downloads: 1 This Week
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  • 19
    The purpose of this project, is to provide an open source replacement for all of Microsoft Exchange functionality. The product is delivered as an installable system that is fully functional and pre configured for use.
    Downloads: 1 This Week
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  • 20

    Password quality checker for LDAP

    Plugin for OpenLDAP who checks password quality

    ppInspect become pqChecker (just change the name) OpenLDAP directory with the PPolicy overlay can manage a passwords policy, especially the password quality. Making this feature pass through adding a plug-in ( dynamic shared library) who execute the essential of job. pqChecker is this plug-in. Settings of passwords quality are: . Number of required uppercase characters. . Number of required lowercase characters. . Number of required special characters. . Number of required digits. . Forbidden characters list.
    Downloads: 1 This Week
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  • 21
    SSHAuth is a plugin for pGINA that lets you authenticate your Windows users against one or more SSH server.
    Downloads: 1 This Week
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  • 22
    A tool to convert data from CSV form to LDIF form.
    Downloads: 1 This Week
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  • 23
    Apache authentication module for Citadel Groupware Server users. Allows the seamlessly authenticate users against the Citadel user database. Uses the native Citadel IPC protocol; features SSL/TLS support for secure communications to the Citadel server.
    Downloads: 1 This Week
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  • 24
    pam_mount module
    pam_mount is a Pluggable Authentication Module that can mount volumes for a user session (login). Supports mounting local filesystems of any kind the normal mount utility supports, with extra code to better support CIFS, FUSE, various crypto, and more.
    Downloads: 1 This Week
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  • 25
    This module provides single sign-on behavior. The user types a passphrase when logging in and is allowed in if it decrypts the user's SSH private key. An ssh-agent is started and keys are added. For the entire session, the user types no more passwords.
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    Downloads: 1 This Week
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