Netcat Gui 13 Verified Guide

Use the listening mode on port 8080, then try connecting from another machine. The GUI shows exact incoming connection attempts, source IPs, and dropped packets (via timeout display).

Step 1: Avoid third-party mirror sites.
Only download from the official GitHub repository or the verified developer’s page. The current verified URL pattern is https://github.com/[verified-author]/netcat-gui/releases/tag/v13.

Step 2: Verify the checksum.
After download, run: netcat gui 13 verified

Compare to the posted checksum on the official release notes. If they differ, delete immediately.

Step 3: Run in a sandbox first.
Use Windows Sandbox or a disposable VM to confirm expected behavior. Use the listening mode on port 8080, then

Set GUI to connect to localhost:80. Send GET / HTTP/1.1\r\nHost: localhost\r\n\r\n. View raw HTTP response headers and body with syntax highlighting.

Download Netcat GUI 13 Verified only from the official source. Share your own verification checksum in the comments below to help others stay safe. For advanced script integration, check out our companion guide: Automating Netcat GUI with AutoHotkey and Bash. Compare to the posted checksum on the official release notes

Last updated: October 2025 – Verified against latest signature databases.

Built on .NET 6 (Windows) and GTK#3 (Linux), the verified version 13 passes all 13 core Netcat functionality tests: TCP, UDP, SSL tunneling, file transfer, and zero-I/O mode.