401K is in invite-only alpha right now. There are a few vendors we work with -- Schwab, The online 401k Company, Sharebuilder, and Vanguard. In practice, these are the best options for small businesses out there.

We don't get paid by 401K companies, so we don't have an incentive to recommend anything other than what we think is awesome for you.

Also, one thing we've promised our early 401K clients -- if they want to work with a 401K company that isn't on our list, we'll build an integration specially for them.