Unapp - A directory of minimal and useful single-purpose apps.
Bot Analytics - Bot Analytics is a conversational analytics tool that helps chatbot owners to improve human-to-bot communication. Identify bottlenecks, filter conversations, and understand engagement.
BotList - An app store for bots
Dialogflow - Conversational UX Platform. (ex API.ai)
Slack App Directory - Your go-to for finding apps that work with Slack
ManyChat - ManyChat lets you create a Facebook Messenger bot for marketing, sales and support.