Support for OpenID 1.1 and 2.0 Support for Simple Registration Extension 1.0 and 1.1 draft Multiple identities with one installation Flat files only, no database required
Overview Community-ID is an OpenID implementation in PHP which is OpenID 2.0 compliant. Community-ID is build to 100% on Open Source software and is release under the BSD license.
BotBouncer.com is a CAPTCHA service for OpenIDs. We provide an API for finding out if a user has filled out our CAPTCHA. We also provide a simple mechanism for OpenID enabled sites to send their users over here to fill out our CAPTCHA.
Prairie is a lightweight OpenID based Internet identity server.
mod_auth_openid is an authentication module for the Apache 2 webserver. It handles the functions of an OpenID consumer as specified in the OpenID 2.0 specification