OpenID is open source technology, is not proprietary, and is completely free. OpenID takes advantage of already existing internet technology allowing you to easily transform an existing URIs into an account which can be used at sites which support OpenID logins.
You can use your OpenID on any one of a growing number of sites (nearly ten-thousand) which support OpenID. Many blog services, such as Blogger, will allow you to leave comments using your ID.
Here are some places you can visit to see where you can use your OpenID to log in today:
How to get an OpenID
You may already have one. If you use any of the following services, you already have your own OpenID:
- Orange (France Telecom)
Well Known & Simple Providers
If you don’t have an OpenID yet, here are a few which are generally recommended by various members of the community. In the end you should choose a Provider from a company which you trust. You can look at a guide comparing provider feature sets.
claimID is the free, easy way to manage your online identity with OpenID.
Secure, free, hosted OpenID server by JanRain.
VeriSign’s Personal Identity Provider
Free OpenID Provider with support for multi-factor authentication.
Free OpenID Provider with support for groups and Korean language.
Free OpenID Provider that eliminates passwords with security features, customization, and browser integration.
For a list of more OpenID Providers, check the list on the wiki. We don’t make any guarantees about the providers listed, though most are quite good.
Roll Your Own
Of course, you can always use your own URI, blog URL, website, etc as your OpenID. Delegation is the simplest way to get up and running with OpenID . Sam Ruby wrote a great tutorial. Delegation requires nothing more than an OpenID Provider and some basic HTML.