Unlike fresh kitchen program that runs from your pc.Modaco's application is done on the website online,which makes it alot easier if you're using a different computer or you at work.You can easily make your own rom online at modaco's and you don't have to worry about installing a program.
There's not much information other then it's currently on beta and the only people that can take advantage of it is the premium member, to check it out go here I currently made my old custom rom using Modaco's online utility and currently testing it out now.. so far so good no issues other then force close, but that was fix by clearing the cache. and a reboot solved the problem.
source info here
By the way this work only for the cdma sprint hero's only,any addition or extra info i will post here.
see attached images of the online kitchen.