Service - Customer service issues solved for you, on demand, for free.
Simple Poll - The easiest way to create polls in Slack
Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.
GitHub Polls - Polls for GitHub issues and readme
LiveMessage from Salesforce - Make mobile messaging a cornerstone of customer service
minipoll - Create simple shareable polls in seconds