crontab guru
Description: Crontab guru is a free online tool that helps you generate, edit, explain and validate cron schedule expressions. It allows you to easily build cron schedule strings and provides examples and descriptions of cron syntax.
Type: software
Nmap
Description: Nmap is an open source network discovery and security auditing tool. It is used to discover hosts and services on a network and to detect potential vulnerabilities.
Type: software
Pricing: Free