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masterpassword for Firefox
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masterpassword for firefox

Master Password implemented as a Firefox extension

This is a firefox addon implementing the masterpassword algorithm invented by Maarten Billemont. You can visit his website at

Please note that this plugin is not affiliated with Mr Billemont


Firefox nightly (v57 and greater) users are encouraged to download the beta, as it is built without the lagacy plugin api, no longer supported in these versions of Firefox.

Support for Firefox version before v51 was dropped with the 2.1 release of masterpassword for firefox.

Download from the Mozilla addon store:

or from the github release pages


Please refer to the wiki

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