I enjoy looking at Cucumber features on relishapp and I'd like to see active_admin there. It's in closed beta but I think Active Admin might be able to get in quickly because it makes such good use of Cucumber.
For a look at what it's like, check out how cucumber's own features are presented there:
If you like this idea, the only action that can be taken now is for someone to sign up for the beta, and plan on adding active_admin once they get in. Once it's added a link in the README would be nice!
I found out about it because https://github.com/rspec/rspec links to it (the Cucumber Features links). I'm also sending an email to support@relishapp.
We love hosting open source projects' docs on Relishapp, but we do prefer them to be maintained by the same people as maintain the code. If you'd like to be set up, just drop us a like at email@example.com and I'll hook you up.
I've got an account. I'll work on getting it setup.