There's also "Free File Fillable Forms", which is part of the weird compromise that tax return prep companies like Intuit and H&R Block negotiated to prevent individuals being allowed to file directly with the IRS. It's actually operated by one of the companies in the "alliance", but it's set up like a digital version of the IRS forms (up to and including the fact that you need to make your own copies of everything because they delete all accounts/data every year).