Firefox

From Best Toolbars

Q: Mozilla Conversion works fine, however, the toolbar privacy function and plugins do not work.

A: Only main toolbar features set is supported for Mozilla/Firefox. Toolbar plugins (RSS, Radio, Weather, etc.) 
are not implemented for Mozilla.

Q: Firefox will not install toolbar stating that Firefox does not support addons with unsecure updates. How do I make a Firefox installer for my toolbar that is compatible?

A: Make sure your Server and UpdateServer URLs point to a SSL link (e.g. Https) instead of Http.