Small (another word for naive in this case, it's simple and serves my needs) rack app providing the information the OpenVPN server collects in it's status file especially including a list of currently connected clients (common name, remote address, traffic, ...). It comes with a Debian 6 compatible init.d file.

It lacks:

authentication
caching (parses file on each request, page does auto-refresh every minute as OpenVPN updates the status file these often)
management interface support
a gem
possibly more...