Open Source C Single Sign On (SSO) Software

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.

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.

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

CryptID an open framework that bridges Single SignOn (SSO) authentication with any standards compliant LDAP based authentication service. If you want to securely authenticate legacy services, such as smtp, pop3 or http against your Active Directory cluster or LDAP server, CryptID can provide secure access to SSO authentication without the messy HTTP bloat common to conventional SAML products. CryptID is designed to support synchronisation from multiple servers, and multiple organisations.

FireWebSSO server for the FireWebSSO addon for Firefox. A Single Sign-On (SSO) server dedicated to Firefox and SeaMonkey navigators. It provides a secure remote storage for logins/passwords, bookmarks and personal notes. For apache or standalone usage.

Extends the Name Service Switch (NSS) API, enabling superior integration with network databases. Various sources, such as MySQL, extend naming services such as /etc/passwd - allowing for better data management and single sign-on capabilities.

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.

Code for reference implementations of identity brokers and simple single sign-on (SSO) mechanisms that utilize XDI and link contracts to manage the dataweb.

Cookie based web authentication and single sign on system for largish intranets under a single domain where many, untrusted, people run their own web services. The server uses a private cookie scoped only for the client browser and the idcheck webserver which is always protected with SSL. In addition to the common practise of using SSL for everything (which idcheck supports). The idcheck system can also be used to provide authentication to websites where you merely want to hide content from various people. For example, an intranet whose contents are available to thousands of people. This is, in fact, its main advantage and feature. Please check the wiki pages for more info (link above). Please submit patches or problems via the patches section (link above). Please note that there are many idcheck RPMs on various web pages. Do not trust or use these versions. Always download them from sf!