Simple Poll - The easiest way to create polls in Slack
Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
GitHub Polls - Polls for GitHub issues and readme
AppDynamics - Get real-time insight from your apps using Application Performance Management—how they’re being used, how they’re performing, where they need help.
minipoll - Create simple shareable polls in seconds
Zabbix - Track, record, alert and visualize performance and availability of IT resources