Chatty - Chat with strangers all around the world in Messenger
Conrad Wise - Chat with the biggest brain on the planet!
StrangerBot - Meet strangers from all over the world, via Telegram
botwick - Build your own SMS-based text bot
Chatterino - Chatterino is a chat client for twitch chat.
Sensay for Slack - Get advice from a helpful human, now available in Slack.