NetTest

NetTest has always been one of my favourite ever programs. It taught me all I ever knew about sockets, taught me a bunch about GUI's in VB6 and helped me make most all of my networking projects ever done.

However, sadly, I lost ALL the NetTest source. So no more development will be done to it, even though a few bugs exist.

It still is an awesome little program though. Far better than using putty/telnet to toy with networks/servers. NetTest can connect to any networked TCP/UDP server and let you send all the text you could ever wish to it. It can also listen on a specific port too. Perfect for when you need to check your client programs are sending the right data. Not only that, but it can handle multiple clients all at once! Darned awesome I'd say.

Download: http://software.palmnet.me.uk/files/NetTest.exe

Source: Lost it!