Boolean - Send single question yes/no surveys
Meetingbird - Powerful meeting scheduling and notes — right in your calendar
Surveys in Slack by Polly - The world's first fully immersive Slack-based survey product
Standuply - Run daily standup meetings and track your metrics in Slack
Simple Poll - The easiest way to create polls in Slack
Navigator - The Teamwork assistant — run great meetings without busywork