This is probably going to be a real challenge but I going to try and set up netplay on a computer I built from 3 broken computers that were all from around 2008. This is going to be a long day....
Update: It didn't really work out, given that the on-board graphics were from a POS ready PC that was originally used in an ice cream shop.

Brawl
Kirby Fighters 2
Melee
Project+
Rock Paper Scissors
Sm4sh 3DS
Sm4sh Wii U
Smash 64
Smash Crusade
SSF2
Ultimate