I had a good look round and could'nt find any.
You can however open demo accounts with several brokers and get an MT4 with feed.
This is a useful way of checking that your SB companies feed is consistant with an independant feed.
If you trade short-term though be sure to check that the charts are historically compatible because they may be a few pips out which will obviously make all the differance on short TF's.
I trade Forex with CS mainly and find that my MT4 charts are usually within a couple of pips.