Note: AutoAuth is now being developed by Steffan Schlein. If you would like to leave feedback, please create an issue on GitHub.
I’ve updated the AutoAuth Firefox extension with a “suggestion” feature: if no username/password is saved for a site, AutoAuth will supply a menu of other usernames that you’ve saved for the site’s other subdomains, along with an “Autofill” button to quickly use one of those suggestions to authenticate for the new subdomain.
For example, if you are trying to access foo.bar.example.com and there is no username and password saved for it, AutoAuth will give you a list of usernames that you’ve saved for example.com and *.example.com (including *.*.example.com). Just select the username that you want to use for foo.bar.example.com and press hte “Autofill” button to fill in the form and submit it.
The newest version of AutoAuth can be installed from the AutoAuth homepage.