HelpScout - Help Scout is a simple, straightforward way to provide excellent support

BotList - An app store for bots

Zendesk - Zendesk is a beautiful, lightweight help-desk solution.

Slack App Directory - Your go-to for finding apps that work with Slack

Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community

ChatBottle - Chatbots Search Engine