DoDo helps you run productive meetings.
Do.com helps people run productive meetings.
By connecting to your calendar, Slack, and other work tools, Do makes it easy to set an agenda, take notes, and track followups. As a result, you have less meetings, shorter meetings, and better outcomes as a company.
Specifically, from a meeting page, you can set the agenda beforehand and have it posted to any Slack channel where others can review it so they are prepared. After the meeting, post the meeting via Do + Slack so everyone is clear on the outcomes and followups.
Do is listed in: Meetings
Howdy
Meekan Scheduling Assistant
Solid
Geekbot
Worklife - Meeting Assistant
Tatsu
Kono
Slack Manager 
Standup Bot
Scrumbot
KnoteUp
Standup Jack