Authentication Software for Linux

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

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  • Context for your AI agents Icon
    Context for your AI agents

    Crawl websites, sync to vector databases, and power RAG applications. Pre-built integrations for LLM pipelines and AI assistants.

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  • 1
    Gobuster

    Gobuster

    Directory/File, DNS and VHost busting tool written in Go

    Gobuster is a tool used to brute-force. This project is born out of the necessity to have something that didn't have a fat Java GUI (console FTW), something that did not do recursive brute force, something that allowed me to brute force folders and multiple extensions at once, something that compiled to native on multiple platforms, something that was faster than an interpreted script (such as Python), and something that didn't require a runtime. Provides several modes, like the classic directory brute-forcing mode, DNS subdomain brute-forcing mode, the mode that enumerates open S3 buckets and looks for existence and bucket listings, and the virtual host brute-forcing mode (not the same as DNS!). Since this tool is written in Go you need to install the Go language/compiler/etc. Full details of installation and set up can be found on the Go language website. Once installed you have two options. You need at least go 1.16.0 to compile gobuster.
    Downloads: 61 This Week
    Last Update:
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  • 2
    ORY Oathkeeper

    ORY Oathkeeper

    A cloud native Identity & Access Proxy / API (IAP)

    ORY Oathkeeper is an Identity & Access Proxy (IAP) and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. The BeyondCorp Model is designed by Google and secures applications in Zero-Trust networks. An Identity & Access Proxy is typically deployed in front of (think API Gateway) web-facing applications and is capable of authenticating and optionally authorizing access requests. The Access Control Decision API can be deployed alongside an existing API Gateway or reverse proxy. Ory offers a support plan for Ory Network Hybrid, including Ory on private cloud deployments. If you have a self-hosted solution and would like help, consider a support plan! The team at Ory has years of experience in cloud computing. Ory's offering is the only official program for qualified support from the maintainers.
    Downloads: 3 This Week
    Last Update:
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  • 3
    Leapp

    Leapp

    Leapp is the DevTool to access your cloud

    Let Leapp manage your Cloud credentials locally. Improve your workflow with the only open-source desktop app and CLI you’ll ever need. Your all-in-one solution to assign IAM Cloud access across teams. Cloud credentials are available with a click. Data stored locally encrypted in your System Vault. Work with your Cloud Identities from a single place. Automatic temporary Cloud credentials generation and rotation. Pick your Cloud Provider to add a Leapp Session. Choose from supported access methods or leverage your federated identity with SAML 2.0 compliant identity providers. Automatically provision your sessions from AWS Single Sign-On via Leapp Integration. Start your Session, and Leapp will automatically generate secure short-lived credentials for you. All sensitive data are stored in your local System Vault and used only when needed to provide best-in-class security.
    Downloads: 2 This Week
    Last Update:
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  • 4
    AutoIndex is a PHP script that makes a table that lists the files in a directory, and lets users access the files and subdirectories. It includes searching, icons for each file type, an admin panel, uploads, access logging, file descriptions, and more.
    Downloads: 14 This Week
    Last Update:
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  • 5
    Opens up IIS Proxy Servers using NTLM to non-Microsoft browsers, etc
    Downloads: 4 This Week
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  • 6
    FreeSMS is a PHP based application to manage an educational facility of teachers and students alike. It is a teacher and student management system providing marketing, registration, course management, attendance and a student evaluation system.
    Downloads: 3 This Week
    Last Update:
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  • 7
    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: 8 This Week
    Last Update:
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  • 8

    cSploit

    cSploit - cyb3r gladiat0r's cPanel mass password changer.

    cSploit is a mass password changer interactive shell script for cpanel usernames along with their respective login passwords it also changes their FTP, MySQL passwords also. And save changed passwords with their respective usernames in a text file. It gives you flexibility to specify custom filename to save password. (This makes filename hard to guess.) This script also allows you to select the specific type of random generated passwords.
    Downloads: 6 This Week
    Last Update:
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  • 9
    LDAP Address Book

    LDAP Address Book

    Web-based LDAP address book browser/editor

    Web application for browsing and searching contact details within an LDAP directory. Supports Microsoft/Samba Active Directory, OpenLDAP and Novell eDirectory.
    Downloads: 1 This Week
    Last Update:
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  • 10
    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: 3 This Week
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  • 11
    GQ is an LDAP client based on GTK+/GTK2
    Downloads: 1 This Week
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  • 12
    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: 2 This Week
    Last Update:
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  • 13
    Free PHP/CI User Login and Management

    Free PHP/CI User Login and Management

    PHP User Login and Management System based on Codeigniter

    User Login & Management System is a PHP + MySQLi powered PHP script built up under the CodeIgniter framework(version 3.x), that allows the registration and management of users with admin panel to manage them. It is providing secure login, authentication, authorization and complete user management. It can be used as a base platform for any CodeIgniter projects. Screenshot amd more details: http://www.webprojectbuilder.com/item/user-login-and-management Demo: http://www.webprojectbuilder.com/item/user-login-and-management/live-demo/31 Username: admin@admin.com Password: 123456 About Us *** Build with Web Project Builder *** A product of IBR Infotech http://www.ibrinfotech.com
    Downloads: 2 This Week
    Last Update:
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  • 14

    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: 1 This Week
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  • 15
    Radius Client coded in java (RFCs 2865 and 2866 compliant).
    Downloads: 1 This Week
    Last Update:
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  • 16
    Open Source SBS

    Open Source SBS

    Webbased Small Business Server

    The Small Business Server is a web based. The software contains a web interface for administration of the system and an Active Directory based on Samba resp. a groupware based on Sogo. It can be used as SBS for sharing data via Webdav and SMB and administrate website based on Apache. Also it is possible to manage certificate.
    Downloads: 1 This Week
    Last Update:
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  • 17
    OpenID is a decentralized authentication protocol for web applications. OpenID users need share credentials with only one OpenID provider, and not every forum and network they log on to. This leads to a safer and more convenient Web. http://openid.net/
    Downloads: 1 This Week
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  • 18
    A Plugin for Sympa.org the mailing list manager. This plugin is an authentification engine with LemonLDAP.org(a sf.net project).
    Downloads: 0 This Week
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  • 19
    A C# module to allow ASP.Net sites to easily use the TypeKey authentication service.
    Downloads: 0 This Week
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  • 20
    AccounteX is an IP accounting system based on the IP Stat program. It has many exciting features like fully customizable web traffic accounting and user access control by many different values. information service and web statistics and administration.
    Downloads: 0 This Week
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  • 21
    Alfred, OpenSource Internet Software, is a collection of utilities that bring Quota support to SQUID. Alfred has been used in a large high school for several years now, and is working without a hitch.
    Downloads: 0 This Week
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  • 22
    mod_auth_ibmdb2 is an Apache module written in C. It provides authentication and group authorization using data stored in an IBM DB2 database.
    Downloads: 0 This Week
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  • 23
    Radius client implementation for Apache to allow basic authentication and authorization through radius.
    Downloads: 0 This Week
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  • 24
    mod_authn_sasl is a SASL authentication backend provider module for the Apache 2.2 webserver. It provides password checking functionality for HTTP Basic Authentication. Username and password are checked against the SASL password checking backends.
    Downloads: 0 This Week
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  • 25
    Authentication Manager is a web based frontend to administrate users and groups with .htaccess in combination with mod_auth_mysql and Apache.
    Downloads: 0 This Week
    Last Update:
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