statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.
GitHub Polls - Polls for GitHub issues and readme
StatusPage.io - StatusPage.io is the best way for web infrastructure, developer API, and SaaS companies to get set up with their very own status page in minutes. Integrate public metrics and allow your customers to subscribe to be updated automatically.
Polls for WhatsApp - Create & share quick polls in your WhatsApp groups
UptimeRobot - Free Website Uptime Monitoring
Twitter Polls - Polls embedded in tweets