Netcat GUI v1.3 is a graphical front-end for the popular "Swiss army knife" network utility, Netcat (
This tool acts as a graphical "sender" for the standard Netcat command-line utility. netcat gui v13 download link
| Issue | Solution |
|-------|----------|
| “Access denied” binding to port <1024 | Run as Administrator (right-click → Run as Admin). |
| No data received despite connection | Check firewalls; try disabling Windows Defender temporarily. Also ensure protocol (TCP/UDP) matches. |
| GUI freezes on large file transfer | v13 has a 64 MB buffer limit. Split large files or use command-line netcat. |
| IPv6 not working | Ensure your OS has IPv6 enabled. v13 supports literal addresses like ::1. | Netcat GUI v1
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socat with Gtk frontends – A few open-source projects (like socat-gui) offer basic GUI wrappers for the more powerful socat.