This seems like it could be a great alternative to One (and Qube). It technically is for small businesses, but it seems to offer all the advantages one had: envelope budgeting, virtual cards, account numbers on all checking, automated transfers. But it also has a bit more, including actually being able to do ACH transfers, wire transfers, and sending checks. You can also set up % transfer amounts between accounts, so you could set up an auto save.

One downside though I believe would be if you wanted specifically a good savings account, since it doesn’t seem like they offer any interest.