Open Source Linux Authentication Software
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Authentication Software for Linux
View 40 business solutionsBrowse 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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*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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JXplorer - A Java Ldap Browser
Mature LDAP, LDIF and DSML client with i18n support.
A java LDAP client with LDIF support, security (inc SSL, SASL & GSSAPI), translated into many languages (inc. Chinese), online help, user forms and many other features. The commercial version is available at https://jxworkbench.com for $9.95. It extends JXplorer to include: - custom LDAP reporting - to pdf, word etc. - Find and Replace with regexp and attribute substitution - A secure password vault to store directory connections - etc. Support for JXplorer and JXWorkbench is available at http://jxplorer.org. Commercial support available from sales@jxworkbench.com -
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EJBCA is an enterprise class PKI Certificate Authority built on JEE technology. It is a robust, high performance, platform independent, flexible, and component based CA to be used standalone or integrated in other JEE applications.
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Apereo CAS WAR Overlay Template
Apereo CAS WAR Overlay template
Welcome to the home of the Apereo Central Authentication Service project, more commonly referred to as CAS. CAS is an enterprise multilingual single sign-on solution and identity provider for the web and attempts to be a comprehensive platform for your authentication and authorization needs. CAS Overlay Template is a ready-to-use template for quickly deploying the Apereo CAS (Central Authentication Service) server, simplifying authentication management for developers. -
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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. -
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Keycloak
Identity and access management for modern applications and services
Add authentication to applications and secure services with minimum fuss. No need to deal with storing users or authenticating users. It's all available out of the box. You'll even get advanced features such as User Federation, Identity Brokering and Social Login. Keycloak is an open source Identity and Access Management solution aimed at modern applications and services. It makes it easy to secure applications and services with little to no code. Users authenticate with Keycloak rather than individual applications. This means that your applications don't have to deal with login forms, authenticating users, and storing users. Once logged-in to Keycloak, users don't have to login again to access a different application. This also applied to logout. Keycloak provides single-sign out, which means users only have to logout once to be logged-out of all applications that use Keycloak. -
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Better Auth
The most comprehensive authentication library for TypeScript
Better Auth is framework-agnostic authentication (and authorization) library for TypeScript. It provides a comprehensive set of features out of the box and includes a plugin ecosystem that simplifies adding advanced functionalities with minimal code in a short amount of time. Whether you need 2FA, multi-tenant support, or other complex features. It lets you focus on building your actual application instead of reinventing the wheel. -
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truffleHog
Searches through git repositories for high entropy strings and secrets
truffleHog searches through git repositories for high entropy strings and secrets, digging deep into commit history. TruffleHog runs behind the scenes to scan your environment for secrets like private keys and credentials, so you can protect your data before a breach occurs. Secrets can be found anywhere, so TruffleHog scans more than just code repositories, including SaaS and internally hosted software. With support for custom integrations and new integrations added all the time, you can secure your secrets across your entire environment. TruffleHog is developed by a team entirely comprised of career security experts. Security is our passion and primary concern, and all features are developed with best practices in mind. TruffleHog enables you to track and manage secrets within our intuitive management interface, including links to exactly where secrets have been found. TruffleHog runs quietly in the background, continuously scanning your environment for secrets. -
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OpenPAM is an open source PAM library that focuses on simplicity, correctness, and portability.
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Authenticator Pro
Two-Factor Authentication (2FA) client for Android + Wear OS
Authenticator Pro is a free and open-source two-factor authentication app for Android. It features encrypted backups, icons, categories, a high level of customization, and even a Wear OS app. Unlike some alternative apps, Authenticator Pro gives you control over your data. You can import from other apps and export at any time. Authenticator Pro is a community-backed open-source project which aims to provide privacy and security to users. The source-code is auditable by anyone on GitHub and released under the GPL 3.0 license. The project has no corporate ties or interests but, rather has the purpose of providing a secure and private two-factor authentication solution to the privacy-conscious. Unlike alternative user-hostile applications, Authenticator Pro does not lock-in your data or communicate with distant servers. Everything is safely protected in the app and can be exported at any time. -
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authentik
The authentication glue you need
authentik is an open-source Identity Provider that emphasizes flexibility and versatility. It can be seamlessly integrated into existing environments to support new protocols. authentik is also a great solution for implementing sign-up, recovery, and other similar features in your application, saving you the hassle of dealing with them. authentik is an open-source Identity Provider focused on flexibility and versatility. You can use authentik in an existing environment to add support for new protocols, implement sign-up/recovery/etc. in your application so you don't have to deal with it, and many other things. You can adopt authentik to your environment, regardless of your requirements. Need an Active-Directory integrated SSO Provider? Do you want to implement a custom enrollment process for your customers? Are you developing an application and don't want to deal with User verification and recovery? authentik can do all of that, and more. -
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serve
Static file serving and directory listing
Assuming you would like to serve a static site, single page application or just a static file (no matter if on your device or on the local network), this package is just the right choice for you. Once it's time to push your site to production, we recommend using Vercel. In general, serve also provides a neat interface for listing the directory's contents. The quickest way to get started is to just run npx serve in your project's directory. If you prefer, you can also install the package globally using Yarn (you'll need at least Node.js LTS). The core of serve is serve-handler, which can be used as middleware in existing HTTP servers. In order to customize the default behaviour, you can also pass custom routing rules, provide your own methods for interacting with the file system and much more. -
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LDAP Account Manager (LAM) is a webfrontend for managing accounts stored in an LDAP directory. You can use templates for account creation and use multiple configuration profiles. Account information can be exported as PDF file.
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appwrite
Secure Backend Server for Web, Mobile & Flutter Developers
Appwrite is a self-hosted and cloud backend-as-a-service platform that provides developers with all the core APIs required to build any application. Build your entire backend within minutes and scale effortlessly using Appwrite's open-source platform. Add Authentication, Databases, Functions, Storage, and Messaging to your projects using the frameworks and languages of your choice. -
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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.
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Authelia
The Single Sign-On Multi-Factor portal for web apps
Authelia is an open-source authentication and authorization server and portal fulfilling the identity and access management (IAM) role of information security in providing multi-factor authentication and single sign-on (SSO) for your applications via a web portal. It acts as a companion for common reverse proxies. With a compressed container size smaller than 20 megabytes and observed memory usage normally under 30 megabytes, it's one of the most lightweight solutions available. Written in Go and React, authorization policies and many other backend tasks are completed in mere milliseconds and login portal loading times of 100 milliseconds makes it one of the fastest solutions available. Processors can use a lot of electricity, but when idle usage is basically so low that you can't measure it, and active usage in a small business environment being under 1% you can rest easy (with the exclusion of password hashing). -
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Casdoor
An open-source Identity and Access Management (IAM)
A UI-first Identity Access Management (IAM) / Single-Sign-On (SSO) platform supporting OAuth 2.0, OIDC, SAML and CAS, integrated with Casbin RBAC and ABAC permission management. Within a few steps, we can setup a Casdoor app and realize our authorization management. Casdoor has a front-end back-end separation architecture, with maneuverable web UI and supporting high concurrency. Casdoor is supporting multi-languages, using i18n to support multi-languages UI. For more languages support, welcome to propose in our community. Casdoor SDK provides many functions, such as identity authentication, user management, resource upload, etc. Access to Casdoor is very convenient, please visit How to Connect to Casdoor for details. Casdoor also support sign up directly. By filling your Username, Display name, Password and Email, after your receive your Email code, you can sign up in Casdoor. -
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Central Authentication Service (CAS)
Identity & Single Sign On for all earthlings and beyond
Welcome to the home of the Apereo Central Authentication Service project, more commonly referred to as CAS. CAS is an enterprise multilingual single sign-on solution and identity provider for the web and attempts to be a comprehensive platform for your authentication and authorization needs. CAS is an open and well-documented authentication protocol. The primary implementation of the protocol is an open-source Java server component by the same name hosted here, with support for a plethora of additional authentication protocols and features. Monitor and track application and system behavior, statistics and metrics in real-time. Manage and review audits and logs centrally, and publish data to a variety of downstream systems. Manage and register client applications and services with specific authentication policies. Cross-platform client support (Java, .NET, PHP, Perl, Apache, etc). -
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Fail2Ban
Daemon to ban hosts that cause multiple authentication errors
Fail2Ban scans log files and bans IPs that show the malicious signs -- too many password failures, seeking for exploits, etc. Generally Fail2Ban is then used to update firewall rules to reject the IP addresses for a specified amount of time, although any arbitrary other action (e.g. sending an email) could also be configured. Out of the box Fail2Ban comes with filters for various services (apache, courier, ssh, etc). Fail2Ban is able to reduce the rate of incorrect authentications attempts however it cannot eliminate the risk that weak authentication presents. Configure services to use only two factor or public/private authentication mechanisms if you really want to protect services. -
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nuBuilder Forte
nuBuilder Forte is a cloud database builder.
nuBuilder Forte is the 4th version of nuBuilder. A open-source browser-based tool created for developing web-based database applications. nuBuilder uses either MySQL or MariaDB databases and gives its users the ability to do database operations like... • Search, Create, Insert, Read, Update, Delete ✪ With low-code tools that create ... - Forms with the Form Builder - Fast Reports - Database queries with the SQL Builder - Customised date and number formats with the Format Builder - Calculated fields with the Formula Builder - Email Templates - Move and resize objects. - Further customisation that can be done with JavaScript and PHP. ✪ nuBuilder stores all forms, reports, company data and PHP/JavaScript code in MySQL. You can backup your entire application within a single database file. ✪ Easy installation: - Download and unzip the nuBuilder files - Upload to your webserver - Create a database (e.g. nubuilder4) and optionally a user - Make a copy of -
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LDAP Explorer is a multi platform, graphical LDAP tool that enables you to browse, modify and manage LDAP servers.
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Howdy For Linux
Windows Hello style facial authentication for Linux
Howdy provides Windows Hello™ style authentication for Linux. Use your built-in IR emitters and camera in combination with facial recognition to prove who you are. Using the central authentication system (PAM), works everywhere you would otherwise need your password: Login, lock screen, sudo, su, etc. -
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Logto
Authentication and authorization infrastructure for SaaS and AI apps
Logto is an open-source authentication and authorization platform built for SaaS, AI products, and modern developer teams. It helps teams add secure sign-in, sign-up, user management, organization support, and access control without building identity infrastructure from scratch. The project is based on standards such as OIDC, OAuth 2.1, and SAML, making it suitable for web apps, mobile apps, APIs, machine-to-machine access, and enterprise integrations. It supports multi-tenancy, role-based access control, enterprise SSO, MFA, social login, and customizable authentication experiences. Developers can integrate it through SDKs for many popular frameworks and languages. Logto is especially useful for teams that need production-grade identity features while keeping control over branding, architecture, and deployment options. -
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PHP OAuth 2.0 Server
A spec compliant, secure by default
league/oauth2-server is a standards compliant implementation of an OAuth 2.0 authorization server written in PHP which makes working with OAuth 2.0 trivial. You can easily configure an OAuth 2.0 server to protect your API with access tokens, or allow clients to request new access tokens and refresh them. The latest version of this package supports PHP 7.2, PHP 7.3, PHP 7.4, PHP 8.0. The openssl and json extensions are also required. All HTTP messages passed to the server should be PSR-7 compliant. This ensures interoperability with other packages and frameworks. The library uses PHPUnit for unit tests. We use Github Actions, Scrutinizer, and StyleCI for continuous integration. In order to prevent man-in-the-middle attacks, the authorization server MUST require the use of TLS with server authentication as defined by RFC2818 for any request sent to the authorization and token endpoints. The client MUST validate the authorization server’s TLS certificate as defined by RFC6125. -
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VoidAuth
Single Sign-On for Your Self-Hosted Universe
VoidAuth is a self-hosted, open-source Single Sign-On (SSO) authentication provider that simplifies managing user access and identity for a suite of private applications. Built around standards like OpenID Connect (OIDC), it serves as a central authentication authority so that users can log in once and gain secure access to multiple services without duplicating credentials. The platform offers a user and group management interface where administrators can invite users, enable self-registration, and configure policies like multi-factor authentication and password resets with email verification. Designed with flexibility in mind, VoidAuth supports features such as passkeys and customizable branding, making it adaptable to a wide range of deployment environments and aesthetic preferences.
