CMake - CMake is an open-source, cross-platform family of tools designed to build, test and package software.
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
SCons - SCons is an Open Source software construction tool—that is, a next-generation build tool.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Ninja Build - Ninja is a small build system with a focus on speed.
Better Uptime - We call you when your website goes down