Mint now lets users keep track of their Bitcoins 12 years ago
Good ol' Yodlee MoneyCenter is pretty decent at tracking net worth. https://moneycenter.yodlee.com.
I don't log in much nowadays, but I remember it is pretty easy to add asset values and get them figured into net worth. You have to keep manually-input stuff updated, of course.
Several of the companies that offer bank feeds ("add your account") use Yodlee's data.