None that have been successful, and this is the nub of the problem. It's like Soupstrain said: there are only two kinds of languages: the ones people complain

None that have been successful, and this is the nub of the problem. It's like Soupstrain said: there are only two kinds of languages: the ones people complain about and the ones nobody uses. A side effect of success is having a large body of existing code to consider when making changes.