Termux - Terminal emulator and Linux environment for Android
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.
MSYS2 - A Cygwin-derived software distro for Windows using Arch Linux's Pacman
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
MinGW - MinGW ("Minimalistic GNU for Windows") is a port of the GNU Compiler Collection (GCC) and...
Better Uptime - We call you when your website goes down