statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.
Product Comparisons - Compare any 2 software products
UptimeRobot - Free Website Uptime Monitoring
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
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.
TestBox - Test drive your software options before you buy