Open Source Single Sign On (SSO) Software
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Single Sign On (SSO) Software
View 116 business solutionsBrowse free open source Single Sign On (SSO) software and projects below. Use the toggles on the left to filter open source Single Sign On (SSO) software by OS, license, language, programming language, and project status.
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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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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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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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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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ZITADEL
Identity infrastructure, simplified for you
Secure authentication management for your application. Customize as you grow, with easy APIs and programmable workflows. Focus on growing, your login is in good hands. Streamline your application development with our all-in-one identity suite. Designed for all user types, be it consumers, businesses, or employees. Offload complex tasks by using our API as solid abstractions. Benefit from an adaptable identity infrastructure with custom code extensions and robust security defaults. -
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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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nuBuilder Forte
nuBuilder Forte is a cloud database builder.
This project has moved to https://github.com/nuBuilder?tab=repositories -
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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 1.5.2 (28-Aug-2026) It is not available here! Get it at https://dacs.dss.ca/download.html -
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BoxyHQ Enterprise SaaS Starter Kit
Kickstart your enterprise app development with the Next.js SaaS
Enterprise-ready SaaS Starter Kit is a Next.js-based SaaS Starter Kit that can save hundreds of development hours while building enterprise-ready SaaS apps. Kickstart your enterprise app development with Next.js SaaS Starter Kit. -
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Step Certificates
A private certificate authority (X.509 & SSH) & ACME server
Open Source step-ca provides the infrastructure, automations, and workflows to securely create and operate a private certificate authority. step-ca makes it easy for developers, operators and security teams to manage certificates for production workloads. Get a public key infrastructure and certificate authority running in minutes. Automate enrollment using ACME, OIDC, one-time tokens, cloud APIs and more. Use systemD timers, daemon mode, cron jobs, CI/CD, and more to automate certificate management. Build and operate systems using secure open standards (e.g. X.509, mTLS, JWT, OAuth, OIDC). step-ca is an online certificate authority for secure, automated certificate management. For people, in exchange for single sign-on ID tokens. For hosts, in exchange for cloud instance identity documents. Whatever your use case, step-ca is easy to use and hard to misuse. -
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Uptrace
Open source APM: OpenTelemetry traces, metrics, and logs
Uptrace is an open-source APM tool that supports distributed tracing, metrics, and logs. You can use it to monitor applications and set up automatic alerts to receive notifications via email, Slack, Telegram, and more. Uptrace is an open-source APM that supports OpenTelemetry tracing, metrics, and logs. You can use it to monitor applications and set up alerts to receive notifications via email, Slack, Telegram, and more. Uptrace collects and analyzes data from a variety of sources, including servers, databases, cloud providers, monitoring tools, and custom applications. It provides a unified view of the entire technology stack, enabling you to monitor the performance, availability, and health of your systems in real-time. Uptrace allows to monitor your whole application stack on a compact and informative dashboard. You get a quick overview for all your services, hosts, and systems. -
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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. -
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Atricore’s JOSSO is an open source and commercially supported Internet Single Sign-On (FSSO) solution for point-and-click and standards-based (SAML2) Internet-scale SSO implementations. For more information contact us at : http://www.josso.org
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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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This authentication plug-in enables LDAP single sign-on's from web portal SSL forms and uses a modified standalone version of the core LDAP Authentication Plug-in. Currently supports MS-ADLS (AD), and OpenLDAP (RFC2307 compliant) Server back ends.
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Glewlwyd SSO Server
Single Sign On Server for Windows
Single Sign On server, OAuth2, Openid Connect, multiple factor authentication with, HOTP/TOTP, FIDO2, TLS Certificates, etc. extensible via plugins -
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Identityflow provides a framework for building protocol flows that perform distributed Identity operations. Examples of Identity Operations are Single Sign-On (SSO) and Attribute queries.
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phpBB Multiple Domain SSO
phpbb Multiple domain Single Sign on with wordpress plugin
What these code modifications do, is to create a single sign on across different, multiple domains for both phpbb and other sites/codes/apps to use. These modifications use phpbb user tables, sessions, everything. What it does is to set cookies for each domain through using iframes, which load some connect.php file that is placed on the other remote domains which needs authentication from phpbb. This is how numerous sites like facebook do it. Currently there is no other way of legally setting cookies for different domains than the one that is active. You have to have a page that loads up all the cookie setting codes from remote domains. However the loading up of authentication page, the remote authenticator pages in their iframes, and the redirection is VERY fast, taking only 1 seconds or 1.5 seconds. just like how you see in facebook etc - or any other site that uses this method. All files contain extensive comments, and also include configuration variables to change. -
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BEST_CAS
Central Authentication Service (CAS)
Central Authentication Service (CAS) as Single-Sign-On solution for the BEST project eResearch Infrastructure. -
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Key Manager is designed to allow distribution and management of SSH keys in a way that scales beyond manually copying public keys to remote hosts. This approaches Single-Sign-On functionality, if limited to ssh access from a single host.
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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. -
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AWES (Apache Web Entry Server) is a module for Apache and provides Authentication (Certificate & Legacy), Access Control, Single Sign On (SSO), Service Level Access Control (SLAC) and Secure Session Handling (Cookie Store).
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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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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).
