Password.txt -
If you are hesitant to install third-party software, the password managers built directly into modern browsers (Google Chrome, Apple Safari, Mozilla Firefox) are significantly safer than a plaintext file. While they are more vulnerable to local machine compromises than dedicated managers, they still store your credentials in an encrypted database rather than open text. The Low-Tech Alternative: A Physical Notebook
Cybersecurity professionals and researchers use large collections of common passwords for "penetration testing" to find vulnerabilities. The SecLists repository on GitHub is a famous example that contains files like 10k-most-common.txt to help developers test if their systems can be easily hacked. password.txt
generate_password_file()