Top Daily Hunts in Slack - A simple, fast way to browse news within Slack
Google Drive to Slack - Slack notifications whenever you work on Google Drive docs
SlackScreen - Full screen public Slack channel display
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
Boomerang Respondable - Write perfect emails with Artificial Intelligence
Heymarket for Slack - Text and Facebook messaging from Slack