A fast port scanner written in Rust that finds open ports quickly and can pipe results into Nmap or custom scripts.
20.7K+35 this week1.4KRustGPL-3.0Updated 3 days ago
2 alternatives
2 best open-source alternatives to Nmap (2026)
Looking for a free, open-source alternative to Nmap? These 2 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| bee-san/RustScan | ★ 20.7K | GPL-3.0 | 3 days ago |
| v-byte-cpu/sx | ★ 1.6K | MIT | 3 months ago |
Command-line network scanner in Go that supports ARP, ICMP, TCP, UDP and SOCKS5 scans with JSON output for automation.
1.6K+2 this week105GoMITUpdated 3 months ago
FAQ
- Is there a free, open-source alternative to Nmap?
- Yes. The most popular open-source alternatives to Nmap on Repolode are RustScan, sx.
- Which Nmap alternative should I choose?
- RustScan has the most GitHub stars and is released under GPL-3.0. Compare the license and last commit of each option in the table above before choosing.
How this list is made: AI reads each project's documentation to match it with products it can replace, every project passes our quality screening, and the list is ranked by GitHub stars. Stars updated Nov 6, 2026. How Repolode works