Pentest-Tools Port Scanner vs RustScan

Pentest-Tools Port Scanner is a cloud-hosted Nmap scanner for discovering open TCP and UDP ports and services on network targets. Users can scan a domain, one IP address, or a network range, including bulk IP ranges. Light scans cover the top 100 TCP and UDP ports; deep scans can extend to all 65,535 ports. Options include service-version and operating-system detection, TCP SYN, full TCP connect, and UDP scanning. Findings can be exported in CSV, JSON, or PDF. The product describes scheduled and parallel scans, notifications, API access, and scan-template workflows, with integrations including Jira, Slack, Microsoft Teams, webhooks, Burp Suite, and GitHub Actions. Internal targets require the VPN Agent, and internal network scanning is an optional add-on. A free plan is listed, but its tier limits are unspecified. Paid plans start at $95 a month, with pricing varying by asset count and billing cycle. The full scanner has a seven-day trial requiring a business email and card; cancel before day eight to pay nothing.

RustScan is a free command-line port scanner for finding open network ports. The project says it can scan all 65,000 ports in three seconds, and discovered ports can be passed automatically to Nmap for further analysis. It supports IPv6, CIDR ranges and file input, with scripting in Python, Lua and Shell. Listed capabilities include service detection, operating-system detection and greppable-text output. RustScan describes adaptive learning that uses information about the scan environment and usage to improve over time. The project also says its continuous integration checks whether the scanner becomes significantly slower than the previous version and aims to ensure accessibility. Cargo is the only officially supported installation method, although releases and package-manager options are also listed. The installation guide recommends Docker and says its image works across systems, including Windows, which is not officially supported. The maintainer says RustScan has been tested only on Linux and that macOS or Windows may have issues; the guide also notes macOS's low open-file limit can significantly affect scanning. The project is licensed under GPL-3.0.