A new site, by the name of tripletsandus.com, has popped up that is dedicated to classic 80s arcade games. Games like Commando, 1943, Frogger, Contra, Defender, the list goes on and on will be available to all for free.
The games are built on various platforms - Shockwave, Flash, Java, and even DOS and Windows games. Some are offered on multiple platforms, and some have downloadable emulator ROMs available.