Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Photostash - Automatically save your pictures from Slack to Gdrive
Cvent - Cvent's event management software provides event planners with a complete solution to increase event attendance and decrease event costs.
Google Drive to Slack - Slack notifications whenever you work on Google Drive docs
Ticket Tailor - Ticket Tailor is an easy-to-use event ticketing platform that allows event organizers of all shapes and sizes to sell tickets online.
Slack It - A bookmarklet to share links in Slack with one click