Is there any good open source Single Sign-On system?

[acupofwater]

I need a SSO system to link all my sub-sites together.
my sub-site include CMS, blog system,dig system,rss system etc.
I hope my users can use one account to visit all the services and don't need log in repeatedly(cookie can keep the loggin status for all services)

Can anybody kindly recommend me a good SSO that can meet this need?

thank you very much!

[Habtom]

I have never had to deal with SSO myself but Prasi [prasi.sourceforge.net] could be what you are looking for.

Habtom

[acupofwater]

Hi Habtom,

thank you so much! whay you told me seems like a great solution,I will try that later.

I will also appriciate if someone tell me more similar system,then I can make a comparasion.

thanks!

[bcolflesh]

LDAP can do all that and is probably already setup on your server.

[en.wikipedia.org...]

[acupofwater]

thanks bcolflesh, that's also much helpful!