I’m pleased to announce that KeeFox has recently been accepted into the official Firefox add-ons directory and can now be found at https://addons.mozilla.org/en-US/firefox/addon/keefox/
After the 30th of June 2011 versions of KeeFox previously downloaded from this website will cease to function so you will need to install the version from the Firefox add-ons directory sometime in the next month. This expiry time is simply to ensure that no-one gets stuck using potentially insecure old versions of KeeFox; all future updates will be delivered automatically in the same way as most Firefox add-ons you have installed (so a fixed expiry time is no longer required).
Version 0.8.20 is currently available and can be installed from the Mozilla add-ons website even if you have already installed version 0.8.20 from this website. Since future updates will be installed automatically it shouldn’t make a big difference whether you install KeeFox from https://addons.mozilla.org/en-US/firefox/addon/keefox/ now or when the next update is announced.
Note that this does not change the beta status of KeeFox. I still think it is nearly ready for an official “1.0” release and the Mozilla add-ons review team think that it is “good enough” to be included in the official directory but there is still work to be done, especially with respect to documentation.