Add this to the list. skyvector.com
Click on Layers and you can see real time weather, icing, instrument conditions, winds aloft, etc, etc. There is a flight planner too. Now you can watch the planes and see what their weather and head/tail winds are too. I suggest using World VFR as the maps are complete worldwide that way. The "white charts" are for instrument flight planning, they are the highways in the sky that the airlines fly, World High is nice as it's complete but not as detailed as the Enroutes. The World low is for smaller aircraft flying lower altitude Instrument flights.