There is https://www.freefilefillableforms.com/ which supports most of the IRS forms as far as I know. I live outside the US and have freelance income and haven't run into a situation I couldn't use there yet.
Unfortunately it has no support for AMT on Form 1116 (Foreign Tax Credit).
I believe taking any FTC requires doing a full AMT calculation (instructions for schedule 2 line 1) which includes a separate AMT version of 1116, so as far as I know FFF is useless for anyone that takes FTC.
It may be made by a contractor but it’s the IRS’ official free filing solution without the sort of income and situation limitations that exist with the free filing products.
That said, I prefer TurboTax’s better competitors like FreeTaxUSA because filling out the forms yourself still really sucks. In the crappy system we have the best you can do is either find a cheap and decent commercial filing solution or get yourself a tax professional, because everything else is a huge time waste.
These Terms of Service ("Agreement") is a legal agreement between you ("you", "your", "licensee"), and On-Line Taxes, Inc. ("OnLine Taxes", "we", "our" or "us").
That doesn't sounds like the IRS to me. Maybe they do work for the IRS, but it's not them.