Many Internet users tend to have a handful of passwords at the most that they use for every website that they signup for. Those passwords are normally weak passwords that can be easily remembered. The danger of this approach is that those users will most likely see a chain reaction of hacked accounts once one account gets hacked.
It could be even worse if those passwords have been used in real life as well which would open the doors for identify theft and worse.
Password Hasher is a Firefox add-on that computes unique passwords using at least one master password. This means that every website will have a different password stored in their database while the user will be using the master password(s) to access those websites.

The benefits of Password Hasher:
- Strong passwords are automatically generated.
- The same master key produces different passwords at many sites.
- You can quickly upgrade passwords by “bumping” the site tag.
- You can upgrade the master key without updating all sites at once.
- It supports different length passwords.
- It supports special requirements, such as digit and punctuation characters.
- All data is saved to the browser’s secure password database.
Users can change several options of Password Hasher. It is for instance possible to set a minimum password size and define if the password has to contain digits, punctuation or mixed cases.
It is furthermore possible to create a so called portable page that can be used on computers when the extension is not available.
via Firefox Mastery
Related posts:
- Make sure you set a master password in Firefox
- Create unique secure passwords for websites
- Export your Firefox Passwords into a secure Password Manager
- One Password Management Software To Rule Them All
- Reset The Master Password In Opera
- How to reset the Master Password in Firefox
- Make your passwords stronger with password chart
- Firefox Mass Password Reset

most users have several computers to surf from like at home/work, seems this program is only good if you just do all your stuff on one PC. Imagine going out on a trip and you want to access a website from the airport…
I’d suggest http://passwordmaker.org which does the same yet appears more mature.
I am a fan of KeePass (keepass.info) it’s a free open source desktop application that stores all of your passwords in an encrypted file with master password protection.
Ideal if you have lots of passwords to store, FTP Accounts, Websites, etc.
I use keepass too, portable version (www.portableapps.com), but if you stil prefer password hasher remember a portable versione of firefox exists too on the same website…
other portableapps (not necessarily open sourced and completely stealth…) on http://www.portablefreeware.com