See also gnu-pw-mgr (CLI): https://www.gnu.org/software/gnu-pw-mgr https://www.gnu.org/software/gnu-pw-mgr It generates passwords based on a secret key ("seed

See also gnu-pw-mgr (CLI): https://www.gnu.org/software/gnu-pw-mgr https://www.gnu.org/software/gnu-pw-mgr It generates passwords based on a secret key ("seed") and memorized transformations to URLs. You can adapt that to use a master password, if you so desire, by using a password as a base for such a transformation, but that's not built in.