Bah, PeeZee! Nothing could ever beat AmIRC2[1] on Amiga!
Especially when you were running "Kuang 11"[2], which developed from a client script into a shared library, written in some compiler language and offering, itself, a script API, in addition to the client's :-)
I don't know how many times some idiots tried to take over a channel and Kuang 11 (or a sister project, it was, I think, which used the K11 API) reacted so fast, that our clients stood rock solid and could not be flooded, etc.
Haha ja linux had this nice ping-flood capability ! Lol come to think of it. It was prob the "first" DDoS attack of the day :D Except you mostly knew your "co-conspirators"