As this year's Google Summer of Code pencils down date has passed, with great pleasure I announce that CL-OpenID version 1.0 Release Candidate 1 is out. Cl-OpenID is an implementation of OpenID protocol in Common Lisp. It implements OpenID Authentication 2.0 standard and is compatible with OpenID Authentication 1.1. Both Relying Party (formerly called OpenID Consumer), and OpenID Provider are implemented. CL-OpenID is available on terms of GNU Lesser General Public License version 2.1 with Franz Inc.'s preamble, also known as LLGPL (Lisp Lesser General Public License). The project has been developed as a Google Summer of Code 2008 project, developed by Maciej Pasternacki and mentored by Anton Vodonosov. Original application is published at. CL-OpenID home page is at http://common-lisp.net/project/cl-openid/ Current code is in darcs repository http://common-lisp.net/project/cl-openid/darcs/cl-openid/ The 1.0 Release Candidate 1 version is tagged 1_0_rc1 in darcs, and is also downloadable from http://common-lisp.net/project/cl-openid/files/ (MD5 checksum for 1.0rc1 tarball is 248dbf1338a645505e9c53462867c93e), either directly, or with ASDF-Install. Full documentation is at http://common-lisp.net/project/cl-openid/darcs/cl-openid/README.html Final status report and plans for the future is published on my blog, at http://blog.pasternacki.net/2008/08/18/gsoc-status-update-week-12-final/