Falco is described as 'Open Source WebPageTest runner to help monitor, analyze, and optimize your websites' and is a Website Monitor in the Development category. There are more than 10 alternatives to Falco for Online / Web-based, SaaS, Android, iPhone and Self-Hosted solutions. The best alternative is Pingdom. It's not free, so if you're looking for a free alternative, you could try GTmetrix or New Relic. Other great apps like Falco are Pingdom Website Speed Test (Free), Request Metrics (Paid), Up Ninja (Paid) and Silent Down (Paid).
* Uptime monitoring - checks are performed approximately once every minute from one of the available locations worldwide. During downtimes, checks are performed from four different locations simultaneously. Downtime is only recorded if more than half of servers can confirm it.
Monitor your website for spelling errors, layout issues, security vulnerabilities and slow pages. PageWatch renders every page of your site in a real browser to catch any potential issues before they become problems.