As of July of 2011 mod_gnutls is now being maintained by Dash Shendy and has a new project page at Source Forge

mod_gnutls uses the GnuTLS library to provide SSL 3.0, TLS 1.0, TLS 1.1 and 1.2 encryption for Apache HTTPD. It is similar to mod_ssl in purpose, but does not use OpenSSL.

Support for SSL 3.0, TLS 1.x.
Support for client certificates.
Support for Safe renegotiation.
Support for RFC 5081bis OpenPGP certificate authentication.
Support for RFC 5054 SRP authentication.
Support for Server Name Indication.
Distributed SSL Session Cache via Memcached
Local SSL Session Cache using DBM
Support for Session Tickets instead of Session Caching
Sets enviromental vars for scripts (compatible with mod_ssl vars)
Small and focused code base:
Lines of code in mod_gnutls: 4,081
Lines of code in mod_ssl: 15,324

Old releases
Git Repository