Nmap vs skipfish
Compare features, pricing, and capabilities to find which solution is best for your needs.

Nmap
Nmap is a free and open-source utility for network discovery and security auditing. It utilizes raw IP packets to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. It is command-line driven, though official GUI versions are also available. by Gordon Lyon (Fyodor)

skipfish
Skipfish is a discontinued command-line web application security scanner known for its recursive crawling and heuristic detection capabilities. It's designed to quickly assess web applications for common vulnerabilities and security flaws. by google
Comparison Summary
Nmap and skipfish are both powerful solutions in their space. Nmap offers nmap is a free and open-source utility for network discovery and security auditing. it utilizes raw ip packets to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and os versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. it is command-line driven, though official gui versions are also available., while skipfish provides skipfish is a discontinued command-line web application security scanner known for its recursive crawling and heuristic detection capabilities. it's designed to quickly assess web applications for common vulnerabilities and security flaws.. Compare their features and pricing to find the best match for your needs.
Pros & Cons Comparison

Nmap
Analysis & Comparison
Advantages
Limitations

skipfish
Analysis & Comparison