How do I sign in or create an account?

There are two ways, both free:

1. Email — enter your email on the login page and we send you a one-time sign-in code. Paste it in and you are in. No password to remember.
2. Continue with Google — one click with your Google account.

You can browse setting pages without signing in, but signing in unlocks the actions: exporting/downloading files, saving favorites, saving your own private copies, voting, submitting settings, and registering your machines.