It seems safe to say that nobody here has heard of Net Tools 5, I've never seen a post about it or it mentioned in a comment..
Basically, I see it as a program with a shitload of good monitoring tools and spammers and such. I've never actually used it (besides verifying random credit card numbers) but I have it and looked through what it has.. IP tools, IP/UPD flooders, mass emailers, email bombers and spammers, Anon tools, bouncers, pingers, security password generators, as well as a few file tools such as encryptors, shredders, steganography, compressors, etc., and even a few system tools like macros, ASCII to Binary and Hex convertors, app terminator, password unmasker, IRC trojan tutorial, and even a 1337 translator. That's just a few of its tools, it's got almost 200 different functions.
I'm using version 5 right now, looks like they updated to 5.0.7.