Masscan vs Pentest-Tools Port Scanner

Masscan is a free command-line TCP port scanner for scanning many machines across wide address ranges. The project says one machine can transmit 10 million packets per second. It supports asynchronous transmission, arbitrary port and address ranges, and scanning IPv4 and IPv6 together without a separate IPv6 mode. Banner checks cover protocols and services including FTP, HTTP, IMAP4, memcached, POP3, SMTP, SSH, SSL, SMBv1, SMBv2, Telnet, RDP and VNC. Results can be saved as XML, binary, grepable, JSON or list output. Its usage and output are intended to be familiar to Nmap users, with some Nmap-compatible options. Masscan runs on Linux, macOS and Windows and is available for self-hosting. The project describes PF_RING DNA support for high-speed transmission and says it can use PF_RING ZC when the adapter name indicates it. It is free software under the GNU Affero General Public License version 3, whose notice states there is no warranty. Users must specify ports and target IP addresses or simple ranges; DNS names are not accepted. The README warns that its custom TCP/IP stack can conflict with the local stack and describes using a separate source IP or firewalling its source port.

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.