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Packet Sender NagleCode, LLC

winget install --id=NagleCode.PacketSender -e

Packet Sender is a free utility to allow sending and receiving TCP, UDP, and SSL (encrypted TCP) packets on the ports of your choosing.

Versions
8.1.1
8.0.9
7.2.3
7.0.6
7.0.5
6.2.3