LettuceMeet - The easiest way to schedule group meetings.
Dovetail - Mobile Cloud-Based Dental Software
Clockwise for Slack - Tame the chaos of work
Loomio - Loomio helps groups of people make decisions together, online.
Meetingbird - Powerful meeting scheduling and notes — right in your calendar
DemocracyOS - DemocracyOS is an open source application for online decision making.