If you could easily move off of ONE closed, commercial app/software to an open source equivalent, what would it be and why? Forget the How for now.
Example: from AirTable to Baserow.
Discussion
To clarify, by commercial I mean not consumer. This would be for work/business.
Active Directory. It is a security mess. It is what you get for trying to be backwards compatible with so many older generations and build on top of it creating a complex nightmare.