[Trisquel-users] Re : Abrowser 32.0.3. extensions.

[lcerf]

*Any* .xpi file. For instance those on  
https://addons.mozilla.org/en-US/firefox/extensions/

Be careful though: unlike Trisquel's page, other sites (such as  
https://addons.mozilla.org/en-US/firefox/extensions/) propose non-free  
add-ons.