What's the Bitwarden of 2 Factor authentication?

Bitwarden provides a facility for MFA. Though there's an argument to be made against eggs + baskets. It might defeat threw purpose a bit.

I use Aegis which is opensource and easily encrypted and backed up locally. Saved my ass where I accidentally deleted my 2FA for Bitwarden, thus locking me out in circle of shite. Aegis allowed me to roll back and pull in that one missing key without having to redo a load i'd made since the last backup and all was good.