I want to use Unicode emoji icons (U+1F300..U+1F5FF) in a free, open-source instant messaging app. I considered using FontAwesome icons, but their icon set is too small (not enough faces for
Then I wanted to use Segoe UI Emoji, but that's copyrighted and expensive, as it's owned by Microsoft.
Are there any free Emoji-complete fonts? If so, what are they?