Extend Slack with Node.js. Looks handy.
A Slackbot to collect and organize links from Slack channels, which are then shared via daily digest.
A service that matches everyone’s calendars, and can quickly (re)schedule meetings via Slack or Hipchat.
Botkit eases the process of designing and running bots that live inside Slack. It provides a semantic interface to sending and receiving messages so that developers can focus on creating novel applications and experiences.