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
Pingspace
Description: Pingspace is a simple website monitoring tool that pings websites regularly to check if they are up or down. It sends notifications when there is downtime detected. It has a simple and easy to use interface.
Type: software
Pricing: Freemium