https://www.freetaxusa.com/ and their parent company https://www.taxhawk.com/ They charge $14.99 for the state filing. Usually a coupon code available. Or go to the state's website (CA at least), and file that for free, too. But for the convenience of not having to input my info again, I'll pay their fee.
This could work for deal with an LLC former from abroad? Not us citizen?
I've looked at https://www.trybookmate.co/tax previously