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
SlickStack
Description: SlickStack is an open-source website builder and hosting platform optimized for speed and security. It allows anyone to easily create fast, scalable websites and web apps without coding.
Type: software
Pricing: Open Source