DF Site Monitor

System for monitoring web sites, allows monitoring the availability of sites and their content by checking whether the given content exists or does not exist on the site. Can be used autonomously or as a module for other scripts. Several methods of user notification when a site changes its status (e-mail, command execution, GET). Search by masks. Multithreaded sites check. Low system requirements: not used MySQL, Perl, PHP, cron. Written in C++.