Intuit (Turbo Tax) and H&R Block are the main lobby against easy tax prep (spent millions per year), then the other 12 members of the ACTR are:
Tax Act
OnLine Taxes
Wolters Kluwer
Tax Hawk
Liberty Tax
Drake Software
Jackson Hewitt
also the following financial institutions:
Netspend
Republic Bank
TPG Santa Barbara
pathward
So who do you use that is not one of the 14 companies above (or owned/operated by them)?
Info about their lobbying actions: https://sunlightfoundation.com/2013/04/15/tax-preparers-lobby-heavily-against-simple-filing/
So far from this old reddit mega-thread:
https://www.reddit.com/r/personalfinance/comments/10ebor4/tax_filing_software_megathread_a_comprehensive/
the most recommended over the services above is FreeTaxUSA
also there’s this tip in the comments:
Edit: Credit Karma was another recommendation, but they are owned by Intuit since 2020:
en.wikipedia.org/wiki/Credit_Karma