Alternatives toApi.ai for Slack
Api.ai for Slack is listed in:Build your own bot
GitHub's scriptable chat bot.
Howdy is a customizable team bot that automates common tasks!
A chat bot scriptable with Ruby
The easiest way to build & host amazing bots
Your Programmable Bot for Slack
A ridiculously simple hosting platform for Slack bots
Automate workflow and tasks for teams