Any other AI chats that are similar to Chai?

I'v recently been using chai and have been enjoying my time, I was just wonder what else is quite popular that is similar to this, I've heard about c.ai but I also heard they dont do NSFW or that is very very strict. I've heard of Janitor AI and Chub.ai but im not sure which one better or so, Was wondering whats ur guys opinion if you mess around with other chatbots outside of chai,