statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.
Ark7 - Choose a property and invest in shares
UptimeRobot - Free Website Uptime Monitoring
Peerstreet - Finances real estate through a form of crowdfunding.
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.
Riley - A personal assistant for apartment hunting