TigerSafe is a free open source password manager.
It allows to store passwords in a file, without internet, by encrypting them with a single password. The user can then use a different password for every website he wants to use, and only has to remember a single password: the one used to encrypt/decrypt the file storing his passwords.
It is highly recommended to do backups of the file storing passwords with TigerSafe, for example copy/paste it in USB flash drives, cloud drives like Google Drive, Dropbox... Indeed, users are solely responsible for their data.
TigerSafe also enables you to store the 2-factor authentication mechanism mostly used by modern websites (TOTP 2FA) in a secure way.
Since TigerSafe is particularly sensitive, no binary installation file is provided (because it could be infected by a virus, or have a vulnerability in its dependencies such as the JDK implementation used).
Instead, installation instructions are provided, and a YouTube video for Windows.